The Gateway Bridge (locally called the South Bridge) is a suspension bridge over the Mississippi River in Clinton, Iowa, USA. It carries U.S. Route 30 from Iowa into Illinois just south of Fulton, Illinois. The bridge itself is two travel lanes wide. The Gateway Bridge was closed in March 2006 for repainting and reconstruction of Route 30 on the Illinois side of the river, and reopened in November 2006. Traffic on U.S. Route 30 intending to cross the river was detoured north to the Lyons-Fulton Bridge.