Autodesk CIVIL3D - CIVILDESIGNCOMP 2007 SLM CD Tutorials Manual page 509

geometry for the remaining elements, including the offsets and curb returns,
is generated based on the parameters you specify.
In a peer road intersection, the crowns of all intersecting roads are held at a
common grade. The pavement for both roads is blended into the curb return
regions, which form the transitions between the intersecting roads.
The drawing for this exercise contains a corridor along each of the intersecting
roads. Each corridor is made up of a corridor assembly and a centerline
alignment and profile.
For more information, see the AutoCAD Civil 3D Help topic Creating
Intersections.
Specify the intersection location
1 Open Intersection-Create-1.dwg, which is located in the
folder (page 819).
2 Click Home tab Create Design panel
Create Intersection.
3 In the drawing, click the intersection point of the two alignments.
Exercise 1: Creating a Peer Road Intersection | 497
tutorial drawings
Intersections drop-down