 At the three U.S.Highways' intersection with their respective business routes, the highway becomes a freeway.US 17, US 15, and US 29 have a diamond interchange with SR 643 (Meetze Road/Lee Street) before the combination partial cloverleaf and directional interchange where US 17 diverges from US 15 and US 29, which head toward Washington as Lee Highway, and all three highways meet the northern end of US 15 Business and US 29 Business (Lee Highway), which are used to reach the eastern end of US 211.