The 23rd Street viaduct is an automobile crossing of the Kansas River, and south of the Rock Island Bridge (Kansas City). It was built in 1921, and rebuilt in 2007. It is an elevated deck truss, and about 3,000 feet long. It survived the 1951, and 1993 Kansas City floods. It has two side approaches, one to the south, one to the north, and rises above the south part of the West Bottoms, and the parking lot to Kemper Arena.