and countless hills and ravines, Pittsburgh is known as "The City of Bridges". Pittsburgh's first river bridges, made of wood and long since replaced, opened...

Clemente Bridge, also known as the Sixth Street Bridge, spans the Allegheny River in downtown Pittsburgh, Pennsylvania, United States. The original bridge at...

following is a list of tunnels in Pittsburgh: List of bridges of Pittsburgh Wikimedia Commons has media related to Tunnels in Pittsburgh. Davis, Christine;...

Environmental Design and energy extraction. Pittsburgh is sometimes called the "City of Bridges" for its 446 bridges. Its rich industrial history left the area...

self-anchored suspension bridges and are historically significant because they are the only trio of nearly identical bridges — as well as the first self-anchored...

Manchester Bridge (Pittsburgh) Fort Pitt Bridge List of bridges documented by the Historic American Engineering Record in Pennsylvania List of crossings of the...

Covered bridges List of toll bridges § United States Category:Lists of bridges documented by the Historic American Engineering Record Category:Lists of bridges...

complete list of current bridges and other crossings of the Ohio River from the mouth at the Mississippi River at Cairo, Illinois to the confluence of the...

nicknames for the city of Pittsburgh, Pennsylvania. City of Bridges Pittsburgh boasts more bridges, owing to its location at the confluence of the Allegheny,...

of 2 New Bridges." Pittsburgh, Pennsylvania: Pittsburgh Post-Gazette, December 30, 1924, p. 3 (subscription required). "Bridges & Tunnels of Allegheny...