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Tour: Penn Lincoln Parkway East
In the 1920s, the main east-west highways across southern Pennsylvania -- US 22, the William Penn Highway, and US 30, the Lincoln Highway -- were generally ...
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Boston Bridge 1893 - Bridges and Tunnels of Allegheny County and ...
iron cantilever through truss. LENGTH OF MAIN SPAN: 350 ft, channel span; 150 ft shore arms. TOTAL LENGTH (including longest elevated ramp): ...
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Liberty Bridge 1928 - HAER PA-448 - Bridges and Tunnels of ...
Photos, data and history for bridge and tunnel structures in Allegheny ... Farrington, Peter M. "The Allegheny County Highway and Bridge Program 1924-1932. ...
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