Subdivision Design – Road Reconstruction – Commercial Site Design – County Road Design – Drainage & Sewer Systems
Civil Design, Intelligently Automated
Civil Survey Applications delivers AI-powered design automation for civil engineering.
From road and subdivision design to grading and plan production, our solutions reduce manual effort, improve consistency, and accelerate project delivery—while keeping engineers in control.
Automate. Integrate. Accelerate.
Our Solutions
Civil Survey Applications is a leader in civil engineering design software, building on decades of development focused on practical productivity tools for engineers.
Whether you are creating subdivision layouts, designing road networks, modeling intersections, desiging commercial sites large or small, managing complex road reconstruction projects our software combines engineering expertise with automation to streamline every stage of the design process.
Civil Site Design
Civil Site Design is the foundation product that automates everyday design tasks, including road networks, intersections, grading, surfaces, profiles, pipes, and plan production for Civil 3D and BricsCAD. In 2019, Civil Survey Applications introduced Project Assist, the first AI tool for road network design, further advancing its leadership in design automation acrpss multiple CAD engines.
Designed for productivity, it provides automated road, intersection, roundabout, knuckle, complex grading, gravity and sanitary pipe design, surface modeling and visualization tools. These automation tools significantly reduce design time while improving project consistency.
By combining proven civil engineering workflows, practical productivity tools, and AI-driven automation, Civil Site Design helps firms reduce repetitive work, improve consistency, and deliver projects faster from concept to construction documentation.

The foundation software for civil design productivity
Project Assist AI
Project Assist AI was released in 2019 as a LLM assistant trained on years of Civil Site Design internal content. It has assisted designers worldwide with automated road and subdivision design that continues to amaze designers.
Our next-generation of Project Assist AI adds Agentic AI modules trained on specific areas of design expertise that bring intelligent assistance directly into specific design workflows.
Project Assist AI and its Agents help engineers accelerate design tasks, automate routine processes, access engineering knowledge to improve project design while leaving the designer in complete control.

The Intelligence Layer for Civil Engineering!
Corridor EZ for Civil 3D
Many engineering firms have been using Civil 3D for years and have invested heavily in creating custom assemblies, styles, workflows and staff training. many are frustrated with the lack of automation tools in Civil 3D. Replacing Civil 3D is not an option!
Corridor EZ was created to address this specific issue.
It is a plugin to Civil 3D with powerful road and subdivision design automation tools. Project Assist AI adds automated road, curb return, intersection, knuckles, widenings and more.
Corridor EZ’s automation tools saves hours of effort in a typical project. Critical functionality includes bi-directional editing with Civil 3D profiles and the ability to create Civil 3D objects including surfaces, profile views, corridors and feature lines while maintaining your production standards.







