The Main Street Bridge formerly carried Main Street over the Rippowam River (also known as Mill River) just outside downtown Stamford, Connecticut. It was designed and manufactured by the Berlin Iron Bridge Company in 1888. It is a two-span wrought iron lenticular truss bridge, each span long, although there are supporting piers every feet. The abutments and central pier are cut granite and other stone, faced in concrete. The bridge was listed on the National Register of Historic Places in 1987, at which time it was the only lenticular truss bridge on a major artery in the state. The bridge is (as of 2014) only open to pedestrian traffic. See also National Register of Historic Places listings in Stamford, Connecticut List of bridges on the National Register of Historic Places in Connecticut References Road bridges on the National Register of Historic Places in Connecticut Bridges completed in 1888 Bridges in Fairfield County, Connecticut Buildings and structures in Stamford, Connecticut National Register of Historic Places in Fairfield County, Connecticut Wrought iron bridges in the United States