~ Andy
In 1925, a new, longer bridge was built by Allegheny County with a skewed alignment in order to eliminate the sharp turns at each end. It followed the alignment of the road on its southern end and met Penn, Monroeville and Airbrake Avenues at a signalized intersection on its northern end. This bridge was to last 88 years! www.historicbridges.org grandly refers to this bridge as the "Great Valley Bridge." This web site notes "The bridge should also be considered historically and technologically significant as a relatively complex bridge, since its skew, incline, and multi-span configuration are indicative of a more complicated and noteworthy engineering achievement." I couldn't have said it better myself! It had two 12-foot lanes and a sidewalk along its western edge. The reported average daily traffic count is 6,908 vehicles. www.bridgemapper.com also states that this bridge "is historically significant because it was built as a joint project between Allegheny County and the Pennsylvania Railroad, dating from a time where industrialization necessitated such transportation improvements."
References:
www.pghbridges.com
www.historicbridges.org
www.bridgemapper.com
www.postgazette.com