Question:
Can you use target aliasing from Corridor A to B, and then at another location from B to A?
Answer:
No - that produces a recursive situation. As a work around, you can copy the geometry without rules or remove rules of the element. For more information regarding copying geometry, please refer to the link below:
http://communities.bentley.com/products/road___site_design/w/road_and_site_design__wiki/14152.how-do-i-create-a-copy-of-civil-geometry