Building Civil 3D Corridors I

Linear corridor design is a foundational skill for any Civil 3D designer. This course guides you through creating and editing corridors, building assemblies, and controlling transitions. You’ll also learn how to design elbows and cul-de-sacs, connect multiple baselines, and develop a cohesive, accurately graded corridor for real-world roadway projects.

This course is delivered in 2 two-hour sessions. A live instructor explains the detailed functions and addresses questions as the class progresses.

​Note: Instructor will present using Autodesk Civil 3D 2026. Students who wish to follow along with instructor are encouraged to use the same version.

Prerequisite: Students should have a working knowledge of AutoCAD Civil 3D.

Recording: Registrants for a course will receive access to a recording of each session for 7 consecutive days. Access will start the next business day after the session ends.

Session 1: Corridor Basics

• Creating and editing an assembly
• Building a basic corridor
• Understanding the properties of a corridor
• Working with corridor regions
• Targeting objects for width and elevation
• Controlling corridor transitions

Session 2: Working with Cul-de-sacs and Elbows

• Creating and working with regions
• Building cul-de-sac profiles
• Creating cul-de-sac assemblies
• Working with multiple baselines
• Using multiple assemblies to a design