Work crews are making changes to freeways in R-T-P as they build the new Triangle Expressway. The short segment of the Durham Freeway south of I-40 closed for good this week. That section of Highway 147 provided a quick connection to T-W Alexander Drive in south Durham. It will eventually be part of the Triangle Expressway, a toll road running along the west side of Raleigh from Morrisville to Holly Springs. D-O-T spokeswoman Holly Allen says drivers going south on the Durham Freeway should take a detour via I-40.