Chapter 10

Advanced Corridors, Intersections, and Roundabouts

In Chapter 9, “Basic Corridors,” you built several simple corridors and began to see the dynamic power of the corridor model. The focus of that chapter was to get things started, but it’s unrealistic to think that a project would have only one road in the middle of nowhere with no intersections, no adjustments, and no complications. You may be having trouble visualizing how you’ll build a corridor to tackle your more complex design projects, such as the one pictured in Figure 10-1.

Figure 10-1: A corridor model for the example subdivision

This chapter focuses on taking your corridor-modeling skills to a new level by introducing more tools to your corridor-building toolbox, such as intersecting roads, cul-de-sacs, advanced techniques, and troubleshooting.

This chapter assumes that you’ve worked through the examples in the alignments, profiles, profile view, assemblies, and basic corridor chapters. Without a strong knowledge of the foundation skills, many of the tasks in this chapter will be difficult.

In this chapter, you will learn to:

• Create corridors with noncenterline baselines
• Add alignment and profile targets to a region for a cul-de-sac
• Use the Interactive Boundary tool to add a boundary to the corridor surface