Friday, December 31, 2021

1927,2014 Ambridge-Aliquippa Bridge in Pennsylvania

(Bridge Hunter; Historic Bridges; B&T3D Satellite)

I discovered this bridge in a "Bridges & Tunnels with Sherman Cahal" post. Any cantilevered bridge that a state DOT restored is worth noting. In fact, HistoricBridges reports that Pennsylvania's original plans were to replace it. However, HistoricBridges explains that the state could not afford a replacement and did just a partial rehabilitation good for 25 years rather than a complete rehabilitation that would have been good for 75 years.

Street View, Sep 2021

Some of the detailed photos in BridgeHunter caught my eye since they showed pin connections. I was able to catch some pin connections in a street view. Note the lower-left and upper-right corners in this view. This bridge must have been a transition design between pin connections and gusset plates because descriptions of the $16.6m 2011-14 rehabilitation include "repairing all gusset plates."
Street View

This view was taken while the rehabilitation was in progress.
Street View, Oct 2013

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