PITTSBURGH ENGINEERING: Tales of Two Bridges

How do you get rid of a much-traveled bridge that needs to be replaced? And conversely how do you save a historic wooden structure that's ready to fall down? You enlist the help of engineers! See how engineers in the area around Pittsburgh have to deal with our many bridges in this segment from the television documentary titled INVENTED, ENGINEERED & PIONEERED IN PITTSBURGH, produced by WQED in cooperation with the Engineers Society of Western Pennsylvania. Production made possible by The Buhl Foundation, Michael Baker Corporation, NOVA Chemicals & United States Steel Corporation.

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So the steel was strong and good... Why didnt they just replace the ends? Oh i know penndot...