The Chesapeake Bay Bridge is a major dual-span bridge spanning the Chesapeake Bay, and connecting the state's rural Eastern Shore region with the urban Western Shore. The original span, opened in 1952 and with a length of 6.9 km, was the world's longest continuous over-water steel structure. The parallel span was added in 1973. The bridge is officially named the Gov. William Preston Lane Jr. Memorial Bridge after William Preston Lane Jr. who, as the 52nd Governor of Maryland, initiated its construction in the late 1940s.