 Shocks Mills Bridge

Shocks Mills Bridge carries tracks of the Norfolk Southern Railway (formerly the Atglen and Susquehanna Branch of the Pennsylvania Railroad) over the Susquehanna River between Marietta, Pennsylvania and Wago Junction, Pennsylvania.During the early 20th century, the PRR constructed what it referred to as its "Low-Grade Lines", branches constructed with a minimal grade to divert freight traffic from its congested and steeper main lines.