The Burlington Bridge is a vertical-lift railroad bridge across the Mississippi River between Burlington, Iowa, and Gulf Port, Illinois, United States. It is currently owned by BNSF Railway and carries two tracks which are part of BNSF's Chicago–Denver main line. It is the third bridge that has existed at the same location. The first, a single-track bridge that opened in 1868, and the second, a double-track bridge built in 1893, were swing bridges. The 1893 bridge was replaced in 2009–2011 by the current structure, which uses a vertical-lift span instead of a swing span. The line and the earlier bridges were originally part of the network of the Chicago, Burlington and Quincy Railroad, commonly known as the Burlington Route, but became part of Burlington Northern Railroad in 1970 and later