U.S. Highway 50/Route 291 Interchange Opens Friday, May 11, 2018 | Views: 9234 | Categories: Public Works Press Releases U.S. Highway 50/Route 291 Interchange Opens $16 million “diverge-about” project touted as key to safety, traffic flow and economic growth The City of Lee’s Summit and its project partners celebrated the official opening of a new $16 million interchange at U.S. 50 and Route 291 South with a ceremonial ribbon cutting on Friday, May 11. The project reconstructed the 40-year-old Route 291 overpass into a diverging diamond design, added a roundabout at Blue Parkway and Jefferson Street, and realigned Oldham Parkway.