{"slice":{"kind":"sub-category","id":"structural","label":"Structural Analysis","href":"/engineer/structural","apiPath":"/api/slices/sub-category/structural","lastmod":"2026-07-18"},"subCategory":{"id":"structural","label":"Structural Analysis","category":"engineer","categoryLabel":"Engineer & Analyze"},"tools":[{"id":"dlubal-rfem","name":"Dlubal RFEM 6","url":"https://www.dlubal.com/en/products/rfem-fea-software","description":"Professional finite element analysis software with member, plate, shell, and solid elements; linear and nonlinear analysis; and modular add-ons for concrete, steel, timber, and glass design.","verdict":"worth-it","composite":4.2,"verdicts":{"structural":"A professional-grade FEA package with transparent perpetual pricing and a 90-day trial -- steep upfront but you own it, and the modular add-on system means paying only for the code checks you need."},"redFlags":[],"primarySubCategory":"structural","subCategories":["structural"],"sectors":["agnostic"],"firmSizeFit":["solo","small-team"],"agentAccess":{"mcp":false,"cli":false,"api":"https://www.dlubal.com/en/solutions/online-services/webservice-and-api","authModel":"unknown","scripting":"none","webhooks":false,"agentDocs":["https://github.com/dlubal-software/RFEM_Python_Client","https://apidocs.dlubal.com/source/rst_methods/rfem_application.html"]},"integrations":[{"name":"Revit"},{"name":"AutoCAD"},{"name":"BricsCAD"},{"name":"Bentley"}],"fileFormats":[{"format":"IFC","direction":"unknown","support":"unknown"},{"format":"DXF","direction":"unknown","support":"unknown"},{"format":"SAF","direction":"unknown","support":"unknown"},{"format":"SDNF","direction":"unknown","support":"unknown"},{"format":"DSTV","direction":"unknown","support":"unknown"},{"format":"glTF","direction":"unknown","support":"unknown"},{"format":"Bentley ISM","direction":"unknown","support":"unknown"},{"format":"BricsCAD","direction":"unknown","support":"unknown"},{"format":"VTK","direction":"unknown","support":"unknown"}],"scores":{"c1":4,"c2":4,"c3":4,"c4":4,"c5":5},"pricing":{"model":"one-time","freeTier":"unknown","freeViewer":"unknown","trial":"unknown"},"evidenceUrls":{"pricing":"https://www.dlubal.com/en/products/rfem-fea-software/rfem/what-is-rfem"},"platforms":["web"],"lifecycle":"active","lastVerified":"2026-07-18","category":"engineer"},{"id":"sap2000","name":"SAP2000","url":"https://www.csiamerica.com/products/sap2000","description":"General-purpose finite element analysis software from CSI, covering buildings, bridges, industrial structures, and non-building applications with advanced nonlinear and dynamic analysis.","verdict":"solid","composite":3.8,"verdicts":{"structural":"Industry-standard general-purpose FEA with 45+ years of solver development -- powerful for complex or non-building structures, but opaque pricing and no self-serve purchase path add friction."},"redFlags":["RF3"],"primarySubCategory":"structural","subCategories":["structural"],"sectors":["agnostic"],"firmSizeFit":["small-team","growing"],"agentAccess":{"mcp":false,"cli":false,"api":"https://www.csiamerica.com/developer","authModel":"unknown","scripting":"none","webhooks":false,"agentDocs":["https://wiki.csiamerica.com/display/kb/OAPI","https://www.csiamerica.com/developer"]},"integrations":[{"name":"Revit"},{"name":"ETABS"},{"name":"SAFE"},{"name":"CSiBridge"}],"fileFormats":[{"format":"IFC","direction":"unknown","support":"unknown"},{"format":"DXF","direction":"unknown","support":"unknown"},{"format":"SAP2000 .SDB","direction":"unknown","support":"unknown"}],"scores":{"c1":5,"c2":3,"c3":3,"c4":4,"c5":4},"pricing":{"model":"contact-sales","freeTier":"unknown","freeViewer":"unknown","trial":"unknown"},"evidenceUrls":{"pricing":"https://www.csiamerica.com/sales"},"platforms":["web"],"lifecycle":"active","lastVerified":"2026-06-30","category":"engineer"},{"id":"skyciv","name":"SkyCiv","url":"https://skyciv.com","description":"Cloud-based structural analysis and design platform covering 3D FEA, member design, connection design, and foundation design -- no installation required.","verdict":"solid","composite":3.8,"verdicts":{"structural":"Best entry point for cloud FEA -- transparent pricing, no installation, and 24/7 engineering support make it unusually accessible."},"redFlags":[],"primarySubCategory":"structural","subCategories":["structural"],"sectors":["agnostic"],"firmSizeFit":["solo","small-team"],"agentAccess":{"mcp":false,"cli":false,"api":"https://skyciv.com/api/v3/docs/getting-started/","authModel":"unknown","scripting":"none","webhooks":false,"agentDocs":["https://skyciv.com/api/v3/docs/getting-started/","https://github.com/skyciv/skyciv-api"]},"integrations":[{"name":"Revit"},{"name":"Tekla"},{"name":"AutoCAD"}],"fileFormats":[{"format":"IFC","direction":"unknown","support":"unknown"},{"format":"DXF","direction":"unknown","support":"unknown"},{"format":"RVT","direction":"unknown","support":"unknown"},{"format":"JSON","direction":"unknown","support":"unknown"}],"scores":{"c1":4,"c2":4,"c3":3,"c4":4,"c5":4},"pricing":{"model":"subscription","freeTier":"unknown","freeViewer":"unknown","trial":"unknown"},"evidenceUrls":{"pricing":"https://skyciv.com/checkout/"},"platforms":["web"],"lifecycle":"active","lastVerified":"2026-06-30","category":"engineer"},{"id":"staad-pro","name":"STAAD.Pro","url":"https://www.bentley.com/software/staad-pro/","description":"3D finite element structural analysis and design for steel, concrete, timber, and aluminum with 90+ international design codes, used on buildings, bridges, and industrial facilities.","verdict":"solid","composite":3.8,"verdicts":{"structural":"The broadest international code coverage and a 40-year track record, but at $3,995+/year with no free trial and an enterprise-oriented feature set, it is priced and scoped for high-volume structural practices."},"redFlags":[],"primarySubCategory":"structural","subCategories":["structural"],"sectors":["agnostic"],"firmSizeFit":["small-team","growing"],"agentAccess":{"mcp":false,"cli":false,"api":"https://docs.viktor.ai/docs/create-apps/software-integrations/staadpro/","authModel":"unknown","scripting":"none","webhooks":false,"agentDocs":["https://www.viktor.ai/blog/186/how-to-use-python-to-automate-staad-pro","https://www.thestructuralengineer.info/news/staadpro-2025-new-release-250001"]},"integrations":[{"name":"Revit"},{"name":"ArchiCAD"},{"name":"Tekla"},{"name":"Navisworks"},{"name":"Bentley iTwin"}],"fileFormats":[{"format":"IFC","direction":"unknown","support":"unknown"},{"format":"ISM","direction":"unknown","support":"unknown"},{"format":"CIMSteel/2","direction":"unknown","support":"unknown"},{"format":"DXF","direction":"unknown","support":"unknown"}],"scores":{"c1":5,"c2":3,"c3":3,"c4":4,"c5":4},"pricing":{"model":"subscription","freeTier":"unknown","freeViewer":"unknown","trial":"unknown"},"evidenceUrls":{"pricing":"https://www.bentley.com/software/staad/"},"platforms":["web"],"lifecycle":"active","lastVerified":"2026-06-30","category":"engineer"},{"id":"etabs","name":"CSI ETABS","url":"https://www.csiamerica.com/products/etabs","description":"Integrated structural analysis and design software for multi-story buildings (steel/concrete frame, shear-wall, seismic, composite) on CSI's 64-bit SAPFire engine, sharing the CSI OAPI automation layer with SAP2000, SAFE, and CSiBridge.","verdict":"solid","composite":3.6,"verdicts":{"structural":"Solid for multi-story building analysis and seismic design -- the CSI OAPI (VBA/VB.NET/C#/C++/Python/MATLAB, shared with SAP2000/SAFE/CSiBridge) is genuinely scriptable, with public perpetual pricing from Plus $7,293 to Ultimate $17,504; CSI does not officially support third-party OAPI tooling."},"redFlags":[],"primarySubCategory":"structural","subCategories":["structural"],"sectors":["agnostic"],"firmSizeFit":["small-team","growing"],"agentAccess":{"mcp":false,"cli":false,"api":"CSI OAPI (VBA, VB.NET, C#, C++, Python, MATLAB) -- shared with SAP2000/SAFE/CSiBridge; free with a valid license, but CSI does not officially support third-party OAPI tooling","authModel":"unknown","scripting":"CSI OAPI scripting (Python/C#/VBA); active community Python wrapper (etabs_api) over COM","webhooks":false,"agentDocs":["https://www.csiamerica.com/developer","https://wiki.csiamerica.com/display/kb/OAPI"]},"integrations":[{"name":"Revit (CSI x Revit link)"},{"name":"SAP2000"},{"name":"SAFE"},{"name":"CSiBridge"}],"fileFormats":[{"format":"EDB","direction":"unknown","support":"unknown"},{"format":"IFC","direction":"unknown","support":"unknown"},{"format":"E2K","direction":"unknown","support":"unknown"}],"scores":{"c1":4,"c2":3,"c3":3,"c4":4,"c5":4},"pricing":{"model":"perpetual","freeTier":false,"freeViewer":"unknown","trial":true,"entryUsd":7293},"evidenceUrls":{"apiDocs":"https://www.csiamerica.com/developer","pricing":"https://www.spectrainge.com/blog/cuanto-cuesta-etabs/"},"platforms":["desktop"],"lifecycle":"active","lastVerified":"2026-07-07","category":"engineer"},{"id":"idea-statica","name":"IDEA StatiCa","url":"https://www.ideastatica.com/","description":"Structural steel connection design and concrete D-region analysis software using CBFEM (Component-Based Finite Element Method) -- designs and code-checks steel connections, concrete members, and anchoring per AISC, Eurocode, and other standards with BIM integration to 40+ FEA/CAD tools.","verdict":"solid","composite":3.6,"verdicts":{"structural":"Solid -- industry-leading steel connection design with patented CBFEM technology, transparent pricing (annual EUR 1,750-4,990, 14-day free trial), and integration with 40+ FEA/CAD tools; however API access requires Enterprise tier and the desktop-only interface (no CLI/MCP, RF2) limits agent-driven workflows."},"redFlags":["RF2"],"primarySubCategory":"structural","subCategories":["structural"],"sectors":["agnostic"],"firmSizeFit":["small-team","growing"],"agentAccess":{"mcp":false,"cli":false,"api":"unknown (Enterprise tier API support)","authModel":"unknown","scripting":"unknown","webhooks":false,"agentDocs":["https://www.ideastatica.com/pricing"]},"integrations":[{"name":"SAP2000"},{"name":"ETABS"},{"name":"Revit"},{"name":"Tekla Structures"},{"name":"Midas Civil"},{"name":"RFEM"},{"name":"STAAD.Pro"},{"name":"Advance Steel"}],"fileFormats":[{"format":"IFC","direction":"unknown","support":"unknown"},{"format":"DXF","direction":"unknown","support":"unknown"},{"format":"CIS/2","direction":"unknown","support":"unknown"}],"scores":{"c1":4,"c2":2,"c3":3,"c4":4,"c5":5},"pricing":{"model":"subscription / perpetual","freeTier":false,"freeViewer":"unknown","trial":true},"evidenceUrls":{"pricing":"https://www.ideastatica.com/pricing"},"platforms":["desktop"],"lifecycle":"active","lastVerified":"2026-07-05","category":"engineer"},{"id":"risa-3d","name":"RISA-3D","url":"https://risa.com/products/risa-3d","description":"Subscription-based 3D finite element analysis software for buildings and industrial structures, covering steel, concrete, wood, masonry, aluminum, and cold-formed steel design.","verdict":"solid","composite":3.6,"verdicts":{"structural":"The most transparently priced desktop FEA package with a 10-day free trial -- solid when you need full 3D structural analysis beyond what cloud calc tools offer."},"redFlags":[],"primarySubCategory":"structural","subCategories":["structural"],"sectors":["agnostic"],"firmSizeFit":["solo","small-team"],"agentAccess":{"mcp":false,"cli":false,"api":"none","authModel":"unknown","scripting":"none","webhooks":false,"agentDocs":["https://www.eng-tips.com/threads/risa-3d-and-python-programming-api.460898/","https://risa.com/products/risa-revit-link"]},"integrations":[{"name":"Revit"},{"name":"ArchiCAD"},{"name":"Tekla Structures"},{"name":"ADAPT Builder"},{"name":"SDS2"}],"fileFormats":[{"format":"DXF","direction":"unknown","support":"unknown"},{"format":"SDNF","direction":"unknown","support":"unknown"},{"format":"XLSX","direction":"unknown","support":"unknown"},{"format":"TXT","direction":"unknown","support":"unknown"},{"format":"CIS/2","direction":"unknown","support":"unknown"}],"scores":{"c1":4,"c2":2,"c3":4,"c4":4,"c5":4},"pricing":{"model":"subscription","freeTier":"unknown","freeViewer":"unknown","trial":"unknown"},"evidenceUrls":{"pricing":"https://risa.com/products/risa-3d"},"platforms":["web"],"lifecycle":"active","lastVerified":"2026-06-30","category":"engineer"},{"id":"risafloor","name":"RISAFloor","url":"https://risa.com/products/risafloor","description":"Desktop floor-system modeling and design software for multi-story buildings that pairs with RISA-3D for lateral analysis and publishes public annual subscription pricing.","verdict":"solid","composite":3.6,"verdicts":{"structural":"Solid -- RISAFloor is a practical companion to RISA-3D for multi-story gravity framing, with public pricing, a free trial, and a clear Revit round-trip path, but it stays in the desktop-engineering lane with limited agent automation."},"redFlags":[],"primarySubCategory":"structural","subCategories":["structural"],"sectors":["agnostic"],"firmSizeFit":["solo","small-team"],"agentAccess":{"mcp":false,"cli":false,"api":"unknown","authModel":"desktop subscription license","scripting":"unknown","webhooks":false,"agentDocs":["https://risa.com/products/risa-revit-link","https://help.risa.com/risahelp/risa-revit/Content/Revit%20Link%20Master%20File/Introduction.htm"]},"integrations":[{"name":"RISA-3D"},{"name":"Revit"}],"fileFormats":[{"format":"DXF","direction":"import","support":"partial"},{"format":"RVT","direction":"both","support":"partial"}],"scores":{"c1":4,"c2":2,"c3":4,"c4":4,"c5":4},"pricing":{"model":"subscription","freeTier":false,"freeViewer":false,"trial":true},"evidenceUrls":{"pricing":"https://risa.com/products/risafloor","signup":"https://risa.com/products/risafloor"},"platforms":["desktop"],"lifecycle":"active","lastVerified":"2026-07-14","category":"engineer"},{"id":"tekla-tedds","name":"Tekla Tedds","url":"https://www.tekla.com/products/tekla-tedds","description":"Structural calculation automation tool that generates compliant, auditable calculation sheets for beam, column, connection, and foundation design across multiple international codes.","verdict":"solid","composite":3.6,"verdicts":{"structural":"The best dedicated calc-sheet automation tool for routine structural design -- audit-ready output and multi-code coverage, but pricing is quote-only and Trimble lock-in is real."},"redFlags":["RF3"],"primarySubCategory":"structural","subCategories":["structural"],"sectors":["agnostic"],"firmSizeFit":["solo","small-team"],"agentAccess":{"mcp":false,"cli":false,"api":"https://developer.tekla.com/tekla-tedds","authModel":"unknown","scripting":"none","webhooks":false,"agentDocs":["https://developer.tekla.com/documentation/introduction-tekla-tedds-api","https://developer.tekla.com/documentation/get-started-tekla-tedds-api"]},"integrations":[{"name":"Tekla Structures"},{"name":"Revit"},{"name":"SketchUp"}],"fileFormats":[{"format":"PDF","direction":"unknown","support":"unknown"},{"format":"IFC","direction":"unknown","support":"unknown"},{"format":"RVT","direction":"unknown","support":"unknown"},{"format":"DWG","direction":"unknown","support":"unknown"},{"format":"DGN","direction":"unknown","support":"unknown"}],"scores":{"c1":4,"c2":3,"c3":3,"c4":4,"c5":4},"pricing":{"model":"subscription","freeTier":"unknown","freeViewer":"unknown","trial":"unknown"},"evidenceUrls":{"pricing":"https://www.tekla.com/products/analysis-and-design-subscription"},"platforms":["web"],"lifecycle":"active","lastVerified":"2026-06-30","category":"engineer"},{"id":"allplan-civil","name":"Allplan Civil (Bridge)","url":"https://www.allplan.com/products/allplan-civil/","description":"Parametric BIM platform for advanced infrastructure design to build workflows -- extends Allplan Ultimate with integrated bridge structural analysis (AASHTO LRFD and Eurocode with national annexes), code-based reinforcement design and checking, parametric road/alignment modeling, 4D construction sequencing, and prestressing tendon modeling; supports all relevant file interfaces (IFC, BCF, LandXML, DWG, DGN, RVT, 3DM) plus Python API and Visual Scripting for automated workflows; part of the Nemetschek Group, with transparent published subscription pricing on the Allplan e-store.","verdict":"solid","composite":3.4,"verdicts":{"civil-infrastructure":"Solid -- the most architecturally coherent bridge BIM platform (parametric 4D bridge modeling with integrated structural analysis in a single software, not a bolt-on), transparent pricing (EUR 879/mo annual, EUR 1,319/mo monthly, EUR 10,548/yr), and genuine agent-access via Python API and Visual Scripting make it a standout; but the Nemetschek-group pricing still runs enterprise-scale (EUR 10,548/yr minimum) and the learning curve from 2D CAD to parametric 4D infrastructure BIM is steep, limiting it to dedicated infrastructure engineering groups.","structural":"A strong structural pick when bridge engineering is the job -- integrated structural analysis, reinforcement checks, and parametric bridge modeling in one environment, but priced and scoped for dedicated infrastructure teams."},"redFlags":[],"primarySubCategory":"civil-infrastructure","subCategories":["civil-infrastructure","structural"],"sectors":["civil"],"firmSizeFit":["growing"],"agentAccess":{"mcp":false,"cli":false,"api":"Python API (PythonParts) + Visual Scripting (no-code); parametric bridge model configurable via scripting; Siemens Parasolid kernel for 3D modeling","authModel":"Allplan Cloud account (subscription)","scripting":"Python (PythonParts framework for custom automation and parametric model generation)","webhooks":false,"agentDocs":["https://pythonparts.allplan.com/"]},"integrations":[{"name":"SCIA Engineer"},{"name":"Lumion"},{"name":"Twinmotion"},{"name":"Bimplus (cloud collaboration)"},{"name":"GIS Connector"}],"fileFormats":[{"format":"IFC","direction":"both","support":"full"},{"format":"BCF","direction":"both","support":"full"},{"format":"LandXML","direction":"both","support":"full"},{"format":"DWG","direction":"both","support":"full"},{"format":"DGN","direction":"both","support":"full"},{"format":"RVT","direction":"import","support":"unknown"},{"format":"3DM","direction":"both","support":"unknown"},{"format":"SKP","direction":"import","support":"unknown"},{"format":"SAF","direction":"export","support":"unknown","note":"Structural analysis format (SCIA)"}],"scores":{"c1":3,"c2":4,"c3":2,"c4":4,"c5":4},"pricing":{"model":"subscription","freeTier":false,"freeViewer":false,"trial":true,"entryUsd":10548},"evidenceUrls":{"apiDocs":"https://pythonparts.allplan.com/","formats":"https://www.allplan.com/products/allplan-civil/"},"platforms":["desktop"],"lifecycle":"active","lastVerified":"2026-07-06","category":"design"},{"id":"clearcalcs","name":"ClearCalcs","url":"https://calcs.com","description":"Standards-aligned structural calculation platform with 200+ inspectable, code-referenced calculators for beam, column, frame, shear wall, retaining wall, and wind/seismic design.","verdict":"solid","composite":3.4,"verdicts":{"structural":"The most approachable structural calc tool -- inspectable code-referenced outputs, concurrent-user licensing, and transparent per-month pricing make permit documentation fast and audit-ready."},"redFlags":[],"primarySubCategory":"structural","subCategories":["structural"],"sectors":["agnostic"],"firmSizeFit":["solo","small-team"],"agentAccess":{"mcp":false,"cli":false,"api":"https://app.clearcalcs.com/docs","authModel":"unknown","scripting":"none","webhooks":false,"agentDocs":["https://calcs.com/blog/clearcalcs-structural-drafting-integration","https://github.com/ClearCalcs"]},"integrations":[{"name":"AutoCAD"},{"name":"BricsCAD"}],"fileFormats":[{"format":"PDF","direction":"unknown","support":"unknown"},{"format":"CSV","direction":"unknown","support":"unknown"}],"scores":{"c1":4,"c2":3,"c3":3,"c4":4,"c5":3},"pricing":{"model":"subscription","freeTier":"unknown","freeViewer":"unknown","trial":"unknown"},"evidenceUrls":{"pricing":"https://calcs.com/pricing/us"},"platforms":["web"],"lifecycle":"active","lastVerified":"2026-07-18","category":"engineer"},{"id":"csibridge","name":"CSiBridge","url":"https://www.csiamerica.com/products/csibridge","description":"Parametric bridge analysis, design, and load-rating software from CSI -- defined using layout lines, spans, bearings, abutments, bents, hinges, and post-tensioning; includes the SAPFire analysis engine with staged construction, creep/shrinkage, cable tensioning, geometric/material nonlinearity, and AASHTO LRFD design code checks.","verdict":"solid","composite":3.4,"verdicts":{"structural":"Solid -- purpose-built for bridge analysis with the same CSI OAPI automation layer (VBA/VB.NET/C#/C++/Python/MATLAB) shared with SAP2000 and ETABS, giving it genuine agent-driven scripting capability; the same csiamerica.com/sales page that publishes SAP2000/ETABS perpetual pricing also lists CSiBridge tiers from Plus $13,391 to Advanced with Rating $29,756 (plus annual maintenance), so the pricing-wall objection no longer applies, though CSI does not officially support third-party OAPI tools.","civil-infrastructure":"Bridge-centric civil software with real parametric span modeling, staged construction analysis, and AASHTO code checks -- far more specialized than Civil 3D or OpenRoads, but directly relevant when the infrastructure scope is bridge design and rating."},"redFlags":[],"primarySubCategory":"structural","subCategories":["structural","civil-infrastructure"],"sectors":["civil"],"firmSizeFit":["small-team","growing"],"agentAccess":{"mcp":false,"cli":false,"api":"CSI OAPI (VBA, VB.NET, C#, C++, Python, MATLAB) -- shared with SAP2000/ETABS/SAFE","authModel":"unknown","scripting":"CSI OAPI scripting (Python/C#/VBA)","webhooks":false,"agentDocs":["https://www.csiamerica.com/developer","https://wiki.csiamerica.com/display/kb/OAPI"]},"integrations":[{"name":"SAP2000"},{"name":"ETABS"},{"name":"SAFE"},{"name":"Revit (CSI x Revit link)"}],"fileFormats":[{"format":"BRG","direction":"unknown","support":"unknown"},{"format":"IFC","direction":"unknown","support":"unknown"},{"format":"E2K","direction":"unknown","support":"unknown"}],"scores":{"c1":4,"c2":3,"c3":2,"c4":4,"c5":4},"pricing":{"model":"perpetual license + annual maintenance, same public rate-card page as SAP2000/ETABS","freeTier":false,"freeViewer":"unknown","trial":"unknown","entryUsd":13391},"evidenceUrls":{"apiDocs":"https://www.csiamerica.com/developer","pricing":"https://www.csiamerica.com/sales"},"platforms":["desktop"],"lifecycle":"active","lastVerified":"2026-07-07","category":"engineer"},{"id":"pgsuper","name":"PGSuper / BridgeLink (WSDOT)","url":"https://www.wsdot.wa.gov/eesc/bridge/software/","description":"Free, open-source bridge design, analysis, and load-rating software suite developed and maintained by the Washington State Department of Transportation (WSDOT) -- PGSuper for precast-prestressed concrete girder design (AASHTO LRFD), PGSplice for spliced post-tensioned girders, XBRate for reinforced concrete bent-cap load rating, plus BRIDG Concrete/Steel and BEToolbox utilities, bundled in the BridgeLink suite; used by state DOTs and bridge engineering consultants across the United States.","verdict":"solid","composite":3.4,"verdicts":{"structural":"Solid -- a genuinely free, open-source, actively maintained bridge design and load-rating suite from WSDOT (current v9.0.2, June 2026 release) with AASHTO LRFD support and a programmable Washington Bridge Foundation Library (WBFL) SDK in C++; the only cost is learning the DOT-grade workflow, and there is no cloud API/CLI (RF2), but for a free tool with no vendor lock-in this is the best value proposition in bridge structural software.","civil-infrastructure":"The best free bridge-design option on the civil side -- strong for AASHTO girder workflows and load rating, but too narrow to replace general corridor or site-design software."},"redFlags":[],"primarySubCategory":"structural","subCategories":["structural","civil-infrastructure"],"sectors":["civil"],"firmSizeFit":["solo","small-team","growing"],"agentAccess":{"mcp":false,"cli":false,"api":"Washington Bridge Foundation Libraries (WBFL) -- C++ programmable software component SDK for bridge engineering; Barlist SDK for custom reinforcing-steel add-ins","authModel":"n/a (free, no license)","scripting":"C++ (WBFL SDK); Barlist SDK add-in development","webhooks":false,"agentDocs":["https://www.wsdot.wa.gov/eesc/bridge/software/"]},"integrations":[{"name":"BridgeLink"}],"fileFormats":[{"format":"CSV","direction":"export","support":"unknown"},{"format":"XLS","direction":"export","support":"unknown"}],"scores":{"c1":5,"c2":2,"c3":3,"c4":5,"c5":2},"pricing":{"model":"free","freeTier":true,"freeViewer":true,"trial":true},"evidenceUrls":{"pricing":"https://wsdot.wa.gov/eesc/bridge/software/index.cfm?fuseaction=download&software_id=47"},"platforms":["windows"],"lifecycle":"active","lastVerified":"2026-07-06","category":"engineer"},{"id":"frilo","name":"FRILO","url":"https://www.frilo.eu/en/","description":"Structural analysis and design suite focused on component-level concrete, steel, timber, masonry, foundation, and geotechnical checks, sold as modular editions with public pricing and trial access.","verdict":"solid","composite":3.2,"verdicts":{"structural":"Solid -- FRILO is one of the more transparent structural suites in this segment, with edition pricing starting at EUR 244/month and a free trial, plus a broad catalog of everyday structural and foundation modules, but it is still a desktop engineer tool rather than an automatable platform."},"redFlags":[],"primarySubCategory":"structural","subCategories":["structural","geotechnical"],"sectors":["agnostic"],"firmSizeFit":["solo","small-team"],"agentAccess":{"mcp":false,"cli":false,"api":"unknown","authModel":"desktop subscription license","scripting":"unknown","webhooks":false,"agentDocs":[]},"integrations":[{"name":"ALLPLAN BIM Connector"}],"fileFormats":[{"format":"PDF","direction":"export","support":"full"},{"format":"IFC","direction":"unknown","support":"unknown"}],"scores":{"c1":4,"c2":2,"c3":3,"c4":4,"c5":3},"pricing":{"model":"subscription","freeTier":false,"freeViewer":false,"trial":true},"evidenceUrls":{"pricing":"https://www.frilo.eu/en/product/frilo-editions/","signup":"https://www.frilo.eu/en/free-trial/"},"platforms":["desktop"],"lifecycle":"active","lastVerified":"2026-07-14","category":"engineer"},{"id":"scia-engineer","name":"SCIA Engineer","url":"https://www.scia.net/en/scia-engineer","description":"Desktop structural analysis and design software for multi-material building and bridge projects, with BIM-ready modeling, openBIM workflows, and transparent annual subscription pricing.","verdict":"solid","composite":3.2,"verdicts":{"structural":"Solid -- SCIA Engineer publishes real subscription pricing ($827/user/month billed yearly), offers a 30-day trial, and covers concrete, steel, timber, and bridge-scale structural analysis in one desktop stack, but automation remains workflow-level rather than API-first."},"redFlags":[],"primarySubCategory":"structural","subCategories":["structural"],"sectors":["agnostic"],"firmSizeFit":["small-team","growing"],"agentAccess":{"mcp":false,"cli":false,"api":"unknown","authModel":"desktop subscription license","scripting":"unknown","webhooks":false,"agentDocs":["https://www.scia.net/en/scia-engineer/features"]},"integrations":[{"name":"Revit"},{"name":"Tekla Structures"},{"name":"IFC workflows"}],"fileFormats":[{"format":"IFC","direction":"both","support":"partial"},{"format":"SAF","direction":"both","support":"partial"},{"format":"DXF","direction":"import","support":"unknown"}],"scores":{"c1":3,"c2":2,"c3":3,"c4":4,"c5":4},"pricing":{"model":"subscription","freeTier":false,"freeViewer":false,"trial":true,"entryUsd":9924},"evidenceUrls":{"pricing":"https://www.scia.net/en/webshop","signup":"https://www.scia.net/en/scia-engineer","formats":"https://www.scia.net/en/scia-engineer/features"},"platforms":["desktop"],"lifecycle":"active","lastVerified":"2026-07-14","category":"engineer"},{"id":"konstru","name":"Konstru","url":"https://www.konstru.com/","description":"Web-based common data environment and interoperability platform for structural and BIM workflows, syncing models bidirectionally between Revit, Tekla Structures, ETABS, SAP2000, RAM, Grasshopper, Excel, and Dynamo with version control, model comparison, and change tracking.","verdict":"solid","composite":3,"verdicts":{"bim-coordination":"A credible structural interoperability layer spun out of Thornton Tomasetti with transparent per-model pricing, free tier for evaluation, and deep bidirectional connectors across Revit/Tekla/ETABS/SAP2000 -- but no public REST API for agent-driven access caps programmatic automation.","structural":"Bidirectional model sync between analysis tools (ETABS, SAP2000, RAM) and BIM authoring (Revit, Tekla) with connectivity repair, model comparison, and merge features -- directly addresses the structural handoff pain point."},"redFlags":["RF2"],"primarySubCategory":"bim-coordination","subCategories":["bim-coordination","structural"],"sectors":["agnostic"],"firmSizeFit":["solo","small-team","growing"],"agentAccess":{"mcp":false,"cli":false,"api":"unknown","authModel":"unknown","scripting":"Desktop plugin connectors for Revit, Tekla, Grasshopper, Dynamo (no documented REST API for agents)","webhooks":false,"agentDocs":[]},"integrations":[{"name":"Revit","type":"native"},{"name":"Tekla Structures","type":"native"},{"name":"ETABS","type":"native"},{"name":"SAP2000","type":"native"},{"name":"RAM","type":"native"},{"name":"Grasshopper","type":"native"},{"name":"Excel","type":"native"},{"name":"Dynamo","type":"native"}],"fileFormats":[{"format":"CSV","direction":"export","support":"full","note":"Captured site data can be exported for reporting."}],"scores":{"c1":3,"c2":1,"c3":3,"c4":3,"c5":5},"pricing":{"model":"freemium tiered by active model count","freeTier":true,"freeViewer":true,"trial":true,"entryUsd":0},"evidenceUrls":{"pricing":"https://konstru.com/pricing/","signup":"https://konstru.com/","integrations":"https://konstru.com/"},"platforms":["web","windows"],"lifecycle":"active","lastVerified":"2026-07-04","category":"coordinate"},{"id":"tekla-structures","name":"Tekla Structures","url":"https://www.trimble.com/en/products/tekla/structures","description":"Constructible structural BIM software from Trimble for steel, concrete, precast, and timber detailing -- produces fabrication-ready shop drawings, rebar detailing, and CNC/DSTV output directly from the 3D model.","verdict":"solid","composite":3,"verdicts":{"bim-authoring":"The standard for fabrication-grade structural detailing -- constructible models translate straight to CNC and shop drawings. All three subscription tiers (Carbon/Graphite/Diamond) are quote-only, and it is a Windows-only desktop app with real switching cost once a project's rebar and connections are modeled.","structural":"Overkill for early-stage structural design -- Tekla Structures is a detailing and fabrication tool, not an analysis package. Pair it with Tekla Structural Designer or a dedicated FEA tool for the calculation side."},"redFlags":["RF1"],"primarySubCategory":"bim-authoring","subCategories":["bim-authoring","structural"],"sectors":["agnostic"],"firmSizeFit":["small-team","growing"],"agentAccess":{"mcp":false,"cli":false,"api":"Tekla Open API (.NET/C# SDK)","authModel":"developer license tied to a live Tekla Structures desktop seat","scripting":".NET/C# Open API, Visual Studio plugin/macro development","webhooks":false,"agentDocs":["https://developer.tekla.com/tekla-structures","https://support.tekla.com/doc/tekla-structures/2026/int_compatible_software"]},"integrations":[{"name":"Tekla Structural Designer"},{"name":"Tekla Tedds"},{"name":"Trimble Connect"},{"name":"Robot Structural Analysis (via CIS/2)"},{"name":"SAP2000 (via CIS/2)"},{"name":"Revit (via IFC)"}],"fileFormats":[{"format":"IFC 2x3","direction":"both","support":"partial","note":"Object conversion to native Tekla objects is scoped to extrusion geometry."},{"format":"IFC 4","direction":"both","support":"unknown","note":"Vendor doc lists import/export as supported but does not document fidelity/completeness."},{"format":"CIS/2","direction":"both","support":"partial","note":"Vendor differentiates fidelity by profile level, e.g. CIS/2 LPM6 analytical vs. LPM6 design."},{"format":"DSTV","direction":"both","support":"unknown"},{"format":"SDNF","direction":"both","support":"unknown"},{"format":"DGN","direction":"both","support":"partial","note":"Import is 3D geometry only; export additionally includes drawings."},{"format":"DWG","direction":"both","support":"unknown"},{"format":"IGES","direction":"both","support":"partial","note":"Scoped to polybeams and straight/curved/arc profiles with boolean operators for NC manufacturing, not the full model."},{"format":"STEP AP203/214","direction":"both","support":"partial","note":"Same manufacturing-geometry scoping as IGES (polybeams/profiles with arc/bend data)."}],"scores":{"c1":2,"c2":3,"c3":2,"c4":4,"c5":4},"pricing":{"model":"contact-sales","freeTier":false,"freeViewer":"unknown","trial":true},"evidenceUrls":{"formats":"https://support.tekla.com/doc/tekla-structures/2026/int_compatible_software"},"platforms":["windows"],"lifecycle":"active","lastVerified":"2026-07-07","category":"produce"},{"id":"allplan-precast","name":"ALLPLAN Precast","url":"https://www.allplan.com/products/allplan-precast/","description":"Precast detailing and production-planning software for wall and slab fabricators, with Planbar lineage, automated reinforcement workflows, and explicit monthly pricing.","verdict":"situational","composite":2.8,"verdicts":{"bim-authoring":"Situational -- ALLPLAN Precast is a serious specialist tool for precast wall and slab factories, with public pricing and highly automated detailing workflows, but the value only appears if precast production is central to the business.","structural":"Strong for structural precast detailing specifically, but far too narrow to be a general structural analysis pick."},"redFlags":[],"primarySubCategory":"bim-authoring","subCategories":["bim-authoring","structural"],"sectors":["agnostic"],"firmSizeFit":["small-team","growing"],"agentAccess":{"mcp":false,"cli":false,"api":"unknown","authModel":"desktop subscription license","scripting":"unknown","webhooks":false,"agentDocs":[]},"integrations":[{"name":"ALLPLAN"},{"name":"IFC workflows"}],"fileFormats":[{"format":"IFC","direction":"export","support":"partial"},{"format":"PDF","direction":"export","support":"full"}],"scores":{"c1":3,"c2":2,"c3":2,"c4":3,"c5":4},"pricing":{"model":"subscription","freeTier":false,"freeViewer":false,"trial":true},"evidenceUrls":{"pricing":"https://www.allplan.com/industry-solutions/precast-design-planning-software/","signup":"https://www.allplan.com/industry-solutions/precast-design-planning-software/"},"platforms":["desktop"],"lifecycle":"active","lastVerified":"2026-07-14","category":"produce"},{"id":"openbridge-designer","name":"Bentley OpenBridge Designer","url":"https://www.bentley.com/software/openbridge-designer/","description":"MicroStation-based bridge design and analysis application for concrete and steel bridge modeling, analysis, design, and load-rating -- integrates terrain, roadway geometry, access ramps, and related infrastructure assets, with support for AASHTO LRFD/LFD/LRFR and international bridge design codes.","verdict":"situational","composite":2.8,"verdicts":{"civil-infrastructure":"Situational -- a comprehensive bridge information modeling (BrIM) environment with published pricing ($10,028/yr via Virtuosity) and iTwin Platform REST API access, but the MicroStation dependency, enterprise pricing, and DOT-scale learning curve limit it to large infrastructure practices already in the Bentley ecosystem.","structural":"Bridge-first structural modeling and code-checking inside the Bentley ecosystem -- relevant when the structural problem is the bridge itself, but too specialized and expensive for general building design workflows."},"redFlags":[],"primarySubCategory":"civil-infrastructure","subCategories":["civil-infrastructure","structural"],"sectors":["civil"],"firmSizeFit":["growing"],"agentAccess":{"mcp":false,"cli":false,"api":"iTwin Platform REST API (iModels API) + iTwin.js SDK; MicroStation MDL + .NET desktop SDK","authModel":"OAuth 2.0 (iTwin Platform)","scripting":"MDL, C++/.NET (MicroStation SDK), Python (MicroStation Python API), iTwin.js (TypeScript)","webhooks":"unknown","agentDocs":["https://developer.bentley.com/apis/imodels-v2/overview/","https://docs.bentley.com/LiveContent/web/OpenBridge%20Designer%20Help-v7/en/GUID-6DED5EC1-3D26-4BEE-8E65-B7AD3C13311D.html"]},"integrations":[{"name":"ProjectWise"},{"name":"iTwin Platform"},{"name":"SYNCHRO"},{"name":"LumenRT"},{"name":"OpenRoads Designer"},{"name":"OpenRail Designer"},{"name":"STAAD.Pro"}],"fileFormats":[{"format":"DGN","direction":"unknown","support":"unknown"},{"format":"LandXML","direction":"unknown","support":"unknown"},{"format":"IFC","direction":"unknown","support":"unknown"},{"format":"DWG","direction":"unknown","support":"unknown"},{"format":"DXF","direction":"unknown","support":"unknown"}],"scores":{"c1":2,"c2":4,"c3":2,"c4":3,"c5":3},"pricing":{"model":"subscription","freeTier":false,"freeViewer":false,"trial":true,"entryUsd":10028},"evidenceUrls":{"pricing":"https://en.virtuosity.com/openbridge-designer"},"platforms":["desktop"],"lifecycle":"active","lastVerified":"2026-07-05","category":"design"},{"id":"prostructures","name":"ProStructures","url":"https://www.bentley.com/software/prostructures/","description":"Structural steel and reinforced-concrete detailing software that combines ProSteel and ProConcrete in one parametric 3D modeling package. It is aimed at fabrication-ready structural detailing, shop drawings, bar schedules, and model-driven documentation rather than full building-scale analysis.","verdict":"situational","composite":2.8,"verdicts":{"structural":"Situational -- ProStructures is a serious detailing environment with IFC/DGN/DWG interoperability, parametric automation, and a documented API for custom tools, but at $9,536/year it is priced for firms doing fabrication-grade steel or rebar output every day, not occasional building-model cleanup."},"redFlags":[],"primarySubCategory":"structural","subCategories":["structural"],"sectors":["agnostic"],"firmSizeFit":["small-team","growing"],"agentAccess":{"mcp":false,"cli":false,"api":"ProStructures API for custom tools, plus MicroStation-based APIs for utilities and commands","authModel":"Bentley desktop license","scripting":"C, C++, C#, and Visual Basic through the ProStructures / MicroStation API surface","webhooks":false,"agentDocs":["https://bentleysystems.service-now.com/community?id=kb_article&sysparm_article=KB0103765","https://docs.bentley.com/LiveContent/web/ProStructures%20Readme-v6/en/GUID-7A9B33C9-24EA-41DA-8D09-DFF161175CEC.html"]},"integrations":[{"name":"MicroStation"},{"name":"ProjectWise"},{"name":"AutoCAD"},{"name":"IFC-based BIM tools"}],"fileFormats":[{"format":"IFC","direction":"both","support":"partial","note":"Independent workflow write-up and journal paper both describe IFC import/export for detailing handoff."},{"format":"DGN","direction":"both","support":"unknown"},{"format":"DWG","direction":"both","support":"unknown"}],"scores":{"c1":2,"c2":3,"c3":2,"c4":3,"c5":4},"pricing":{"model":"subscription","freeTier":false,"freeViewer":false,"trial":"unknown","entryUsd":9536},"evidenceUrls":{"pricing":"https://en.virtuosity.com/prostructures","apiDocs":"https://bentleysystems.service-now.com/community?id=kb_article&sysparm_article=KB0103765","changelog":"https://docs.bentley.com/LiveContent/web/ProStructures%20Readme-v7/en/GUID-EB2C2791-BF48-4C41-B8A4-9645F0BC6327.html"},"platforms":["windows"],"lifecycle":"active","lastVerified":"2026-07-14","category":"engineer"},{"id":"ram-structural-system","name":"RAM Structural System","url":"https://www.bentley.com/software/ram-structural-system/","description":"Integrated 3D structural analysis and design software for steel and concrete building systems. RAM Structural System combines gravity, lateral, and foundation workflows in a Windows desktop suite used by structural engineers working on building frames, tilt-up systems, and multistory concrete or steel structures.","verdict":"situational","composite":2.8,"verdicts":{"structural":"Solid -- RAM Structural System is still one of Bentley's clearest building-structure specialists, with current 2026 code-support docs, a documented data-access API, and direct Revit/Tekla/OpenBuildings handoff, but the $4,856/year seat price and Windows desktop deployment keep it in specialist-practice territory."},"redFlags":[],"primarySubCategory":"structural","subCategories":["structural"],"sectors":["agnostic"],"firmSizeFit":["small-team","growing"],"agentAccess":{"mcp":false,"cli":false,"api":"RAM DataAccess API plus RAM Data Extractor for XML, Access, and SQLite exports","authModel":"Bentley desktop license / SELECT entitlement","scripting":".NET and VBA-style automation through RAM DataAccess; data extraction through built-in exporter","webhooks":false,"agentDocs":["https://docs.bentley.com/LiveContent/web/RAM%20Structural%20System%20Help-v4/en/GUID-5669A823-2F73-4841-81A5-D637FDFCE7B0.html","https://docs.bentley.com/LiveContent/web/RAM%20Structural%20System-v2026/Help/en/Topic/c-rss_RAM_Structural_System_Help_Home_Page.html"]},"integrations":[{"name":"Revit"},{"name":"Tekla"},{"name":"OpenBuildings Designer"},{"name":"RAM Concept"},{"name":"RAM Connection"}],"fileFormats":[{"format":"DXF","direction":"export","support":"partial","note":"Frame and wall elevations can be exported to CAD DXF."},{"format":"XML","direction":"export","support":"full","note":"RAM Data Extractor export."},{"format":"SQLite","direction":"export","support":"full","note":"RAM Data Extractor export."},{"format":"ISM","direction":"both","support":"unknown","note":"Bentley ISM plug-in is listed in the licensing matrix."}],"scores":{"c1":2,"c2":3,"c3":2,"c4":3,"c5":4},"pricing":{"model":"subscription","freeTier":false,"freeViewer":false,"trial":"unknown","entryUsd":4856},"evidenceUrls":{"pricing":"https://en.virtuosity.com/ram-structural-system","apiDocs":"https://docs.bentley.com/LiveContent/web/RAM%20Structural%20System%20Help-v4/en/GUID-5669A823-2F73-4841-81A5-D637FDFCE7B0.html","changelog":"https://docs.bentley.com/LiveContent/web/RAM%20Structural%20System-v2026/Help/en/Topic/c-rss_RAM_Structural_System_Help_Home_Page.html"},"platforms":["windows"],"lifecycle":"active","lastVerified":"2026-07-14","category":"engineer"},{"id":"sofistik","name":"SOFiSTiK","url":"https://www.sofistik.com/","description":"FEA, BIM, and CAD software for structural engineering with a strong bridge-design specialisation -- the SOFiSTiK Bridge + Infrastructure Modeler (SBIM) provides parametric 4D bridge modelling with integrated structural analysis, code-based design (Eurocode, BS, AASHTO), and BIM coordination (Revit, Rhino, AutoCAD integration); the FEM Packages cover 2D/3D finite element analysis for buildings and infrastructure; founded 1987 in Nuremberg, Germany, with ~100 employees serving over 5,000 customers worldwide, including the Queensferry Crossing (Scotland) and other major bridge projects.","verdict":"situational","composite":2.8,"verdicts":{"structural":"Situational -- a proven European bridge-engineering FEA/BIM platform (founded 1987, 15,268 LinkedIn followers, public company, 5,000+ customers including Queensferry Crossing) with genuine BIM integration (SBIM, Revit add-ons, Rhino/Grasshopper interface) and AASHTO support for US bridge markets; but commercial pricing is entirely quote-required (RF1) -- the 30-day free trial enables evaluation but does not disclose cost, so a sales call is still needed before budget estimation; the desktop-centric delivery with Rhino/Revit scripting options supports agent-driven workflows at the intermediate level.","civil-infrastructure":"Bridge and infrastructure specialists get parametric bridge BIM plus integrated FEA in one stack -- strong for bridge-centric civil teams, but not a general roadway-production tool."},"redFlags":["RF1"],"primarySubCategory":"structural","subCategories":["structural","civil-infrastructure"],"sectors":["civil"],"firmSizeFit":["growing"],"agentAccess":{"mcp":false,"cli":false,"api":"Rhino/Grasshopper interface (parametric modelling); Revit add-on API (Analysis + Design for Revit, Reinforcement); BiMTOOLS for BIM integration; no publicly documented standalone REST API","authModel":"license-based (desktop)","scripting":"Grasshopper (Rhino visual scripting); Revit API via SOFiSTiK add-ons; Rhino Python scripting","webhooks":false,"agentDocs":["https://www.sofistik.com/"]},"integrations":[{"name":"Revit"},{"name":"Rhino"},{"name":"AutoCAD"},{"name":"IDEA StatiCa"}],"fileFormats":[{"format":"IFC","direction":"both","support":"unknown"},{"format":"DWG","direction":"both","support":"unknown"},{"format":"DXF","direction":"both","support":"unknown"},{"format":"SAF","direction":"both","support":"unknown","note":"Structural analysis format"}],"scores":{"c1":2,"c2":3,"c3":2,"c4":3,"c5":4},"pricing":{"model":"subscription (quote-required, but 30-day free trial)","freeTier":false,"freeViewer":false,"trial":true},"evidenceUrls":{"pricing":"https://www.sofistik.com/en/downloads/trialversion"},"platforms":["desktop"],"lifecycle":"active","lastVerified":"2026-07-13","category":"engineer"},{"id":"woodworks-awc","name":"WoodWorks (AWC/CWC)","url":"https://awc.org/resources/woodworks-software-for-wood-design/","description":"Structural wood design software suite (Sizer, Shearwalls, Connections) for light-frame and mass timber structures, conforming to IBC, ASCE 7, NDS, and SDPWS. Published by the Canadian Wood Council and endorsed by the American Wood Council with concurrent licensing, free updates, and Revit/cadwork interfaces.","verdict":"situational","composite":2.8,"verdicts":{"structural":"Code-compliant wood design suite with free updates, concurrent licensing, and 10-day trial -- purpose-built for residential light-frame and mid-rise wood structures (up to 6 stories for Shearwalls), with Revit (MWF Pro Wood) and cadwork interfaces, but no public API/CLI/MCP (RF2) and a proprietary project format."},"redFlags":["RF2"],"primarySubCategory":"structural","subCategories":["structural"],"sectors":["residential"],"firmSizeFit":["solo","small-team"],"agentAccess":{"mcp":false,"cli":false,"api":"none (desktop application; Revit interface via MWF Pro Wood third-party add-on)","authModel":"none","scripting":"none","webhooks":false,"agentDocs":["https://cwc.ca/woodworks-software/","https://awc.org/resources/woodworks-software-for-wood-design/"]},"integrations":[{"name":"Revit (via MWF Pro Wood)"},{"name":"cadwork"}],"fileFormats":[{"format":"WoodWorks project files","direction":"native","support":"full"},{"format":"CAD (via cadwork)","direction":"export","support":"partial"},{"format":"IFC (via Revit/MWF)","direction":"export","support":"partial"}],"scores":{"c1":4,"c2":1,"c3":3,"c4":4,"c5":2},"pricing":{"model":"subscription (annual)","freeTier":false,"freeViewer":false,"trial":true},"evidenceUrls":{"pricing":"https://awc.org/resources/woodworks-software-for-wood-design/"},"platforms":["windows"],"lifecycle":"active","lastVerified":"2026-07-18","category":"engineer"},{"id":"aashtoware-bridge","name":"AASHTOWare Bridge Design and Rating","url":"https://www.aashtoware.org/","description":"Specialised bridge design and load-rating software from the American Association of State Highway and Transportation Officials (AASHTO) -- the BrDR (Bridge Design and Rating) product supports AASHTO LRFD design, load rating (LRFR/LFD), and bridge management (BrM) for U.S. state DOTs and their engineering consultants; part of the AASHTOWare suite alongside Project (construction management), Pavement ME Design, Safety, and PermitRoute; developed collaboratively by state transportation agencies with an AASHTOWare OpenAPI for system integration and an Alliance Program for third-party partner extensions.","verdict":"situational","composite":2.6,"verdicts":{"structural":"Situational -- the de facto U.S. DOT standard for bridge design and load rating with AASHTO LRFD/LRFR support, an OpenAPI for system integration, and a collaborative state-DOT development model that guarantees alignment with agency workflows; published procurement pricing is available (FY2026 AASHTO catalog: Agency Discount License $6,850/year, single workstation $11,350-13,000/year), enabling cost estimation before RFP, though the tool is built for DOT-scale procurement cycles and carries a steep DOT-specific learning curve with limited applicability outside the U.S. public-agency bridge engineering market.","civil-infrastructure":"Highly relevant on the civil side when the infrastructure workflow is public-agency bridge delivery -- authoritative for DOT bridge programs with discoverable cost estimates, but too narrow and procurement-heavy for general 3D civil design work."},"redFlags":[],"primarySubCategory":"structural","subCategories":["structural","civil-infrastructure"],"sectors":["civil"],"firmSizeFit":["growing"],"agentAccess":{"mcp":false,"cli":false,"api":"AASHTOWare OpenAPI -- REST API for external system integration with AASHTOWare products; documented in the AASHTOWare developer portal","authModel":"unknown (agency-licensed)","scripting":"unknown","webhooks":false,"agentDocs":["https://www.aashtoware.org/"]},"integrations":[{"name":"AASHTOWare Project"},{"name":"AASHTOWare Pavement"},{"name":"HCSS HeavyBid"}],"fileFormats":[{"format":"CSV","direction":"export","support":"unknown"}],"scores":{"c1":3,"c2":3,"c3":2,"c4":2,"c5":3},"pricing":{"model":"subscription (agency license, published procurement pricing)","freeTier":false,"freeViewer":false,"trial":"unknown","entryUsd":6850},"evidenceUrls":{"pricing":"https://www.aashtoware.org/wp-content/uploads/2025/07/FY-2026_AASHTOWare_Catalog_Final.pdf"},"platforms":["desktop"],"lifecycle":"active","lastVerified":"2026-07-18","category":"engineer"},{"id":"tekla-structural-designer","name":"Tekla Structural Designer","url":"https://www.tekla.com/products/tekla-structural-designer","description":"Cloud-accessible structural analysis and design software combining model-based design with analysis capabilities, featuring seismic design, portal frame design, and AI-assisted workflows for structural engineers.","verdict":"situational","composite":2.6,"verdicts":{"structural":"Solid -- Tekla Structural Designer fills a gap between general analysis tools and Revit, with strong seismic design workflows and AI assistance. Quote-only pricing and Windows-only desktop deployment are the main friction points; C2 is held back by lack of CLI/MCP automation."},"redFlags":["RF1"],"primarySubCategory":"structural","subCategories":["structural","bim-authoring"],"sectors":["agnostic"],"firmSizeFit":["small-team","growing"],"agentAccess":{"mcp":false,"cli":false,"api":"Tekla Structural Designer Open API (.NET/C# SDK via NuGet)","authModel":"License-based (developer license tied to desktop seat)","scripting":"Remoting API (.NET/C#)","webhooks":false,"agentDocs":["https://developer.tekla.com/tekla-structural-designer","https://developer.tekla.com/documentation/get-started-tekla-structural-designer-open-api"]},"integrations":[{"name":"Tekla Structures"},{"name":"Revit"},{"name":"Grasshopper"},{"name":"Trimble Connect"}],"fileFormats":[{"format":"IFC 2x3","direction":"both","support":"full"},{"format":"IFC 4","direction":"both","support":"full"},{"format":"IFC 4.3","direction":"both","support":"full"},{"format":"DWG","direction":"both","support":"partial"},{"format":"DGN","direction":"both","support":"partial"},{"format":"PDF","direction":"export","support":"full"},{"format":"STP","direction":"import","support":"partial"},{"format":"IGS","direction":"import","support":"partial"},{"format":"RVT","direction":"import","support":"partial"}],"scores":{"c1":2,"c2":3,"c3":2,"c4":3,"c5":3},"pricing":{"model":"contact-sales","freeTier":false,"freeViewer":false,"trial":true},"evidenceUrls":{"formats":"https://support.tekla.com/doc/tekla-structural-designer/2026/ins_tekla_structural_designer_hardware_recommendations","pricing":"https://www.tekla.com/products/tekla-structural-designer"},"platforms":["windows"],"lifecycle":"active","lastVerified":"2026-07-15","category":"engineer"},{"id":"o-calc-pro","name":"O-Calc Pro","url":"https://www.o-calcpro.com/","description":"Structural analysis software for utility poles -- performs comprehensive pole loading analysis for joint use, equipment or line upgrades, system hardening, and pole replacement; supports wood, manufactured steel, and concrete poles with nonlinear finite element processing.","verdict":"situational","composite":2,"verdicts":{"structural":"Situational -- the de facto pole loading analysis tool for U.S. utility and telecom joint-use engineering with advanced nonlinear FEA, NESC compliance, and multi-material support (wood/steel/concrete); but quote-only pricing (RF1), no public API, and narrow utility-pole scope limit broader structural engineering applicability."},"redFlags":["RF1"],"primarySubCategory":"structural","subCategories":["structural"],"sectors":["energy-utilities"],"firmSizeFit":["small-team","growing"],"agentAccess":{"mcp":false,"cli":false,"api":"unknown","authModel":"unknown","scripting":"unknown","webhooks":false,"agentDocs":[]},"integrations":[{"name":"SPIDAcalc"},{"name":"Katapult Pro"},{"name":"Osmose field services"}],"fileFormats":[{"format":"CSV","direction":"export","support":"full"}],"scores":{"c1":2,"c2":1,"c3":2,"c4":2,"c5":3},"pricing":{"model":"subscription (quote-required)","freeTier":false,"freeViewer":false,"trial":"unknown"},"evidenceUrls":{"pricing":"https://www.osmose.com/request-ocalc-license"},"platforms":["desktop"],"lifecycle":"active","lastVerified":"2026-07-06","category":"engineer"}]}