Civil & Infrastructure Design

AutoCAD-based civil engineering design and documentation platform for grading/surfaces, road and rail corridor modeling, pipe network hydraulics, and survey -- the civil-engineering flagship that turns conceptual InfraWorks models into construction-ready plan/profile sheets and quantity takeoffs.

Solid -- the civil-sector equivalent of Revit, with transparent published pricing ($360/mo, $2,870/yr), native LandXML/IFC export, and deep Revit/InfraWorks/ReCap/Navisworks interop, but agent access is limited to the desktop .NET/COM API -- no confirmed cloud REST API or CLI for Civil 3D itself.

Early-stage conceptual infrastructure design tool that builds a GIS-rich 3D context model (terrain, imagery, existing utilities) for rapid road, bridge, rail, and drainage concept design and stakeholder visualization before detailed design moves into Civil 3D or Revit.

Solid for early conceptual road/bridge/drainage studies in real-world GIS context and stakeholder visualization ahead of Civil 3D -- but Capterra lists it as strictly quote-only pricing (RF1) with no InfraWorks-specific API, only file-based IMX/LandXML handoff to Civil 3D.

MicroStation-based civil design application for detailed road, highway, and rail corridor design -- survey, drainage, subsurface utilities, and construction staking documentation -- Bentley's Civil 3D alternative for DOT and infrastructure-heavy practices.

Situational -- a genuinely strong agent-access story (iTwin Platform REST/OAuth APIs on top of the MicroStation MDL/.NET SDK) and IFC export reached general availability in the 2025 release, but published pricing runs $6,057/yr (or $15,142 perpetual) via Virtuosity/G2, punitive for anything short of a DOT-scale practice already invested in the Bentley/ProjectWise ecosystem.