Rachel Carson Bridge

Rachel Carson Bridge, also known as the Ninth Street Bridge, spans the Allegheny River in Downtown Pittsburgh, Pennsylvania in the United States. The total length is 840 feet including the 410-foot main span and two 215-foot side spans, or 995 feet including the approaches. The total width of the deck is 62 feet, including the 38-foot roadway plus two 10-foot sidewalks outside the compressive plate girder. Whereas the roadway formerly carried two vehicle lanes and two streetcar tracks, it was changed to carry four wide vehicle lanes. The 2019-2020 refurbishment reduced the lanes to three.

Named for the naturalist and author Rachel Carson, a Pittsburgh native, it is one of three parallel bridges called The Three Sisters, the others being the Roberto Clemente Bridge and the Andy Warhol Bridge.