Henry Avenue Bridge Rehabilitation
Henry Avenue Bridge Rehabilitation

Ralph Modjeski designed the Henry Avenue Bridge over the Wissahickon Creek in the early 20th Century. Today, however, ever-increasing traffic demands have resulted in deteriorating roadway deck conditions. And because the bridge is also listed on the National Register of Historic Places, PennDOT sought the help of a versatile bridge design firm.

As active partners, Modjeski and Masters' (M&M) engineers met early with resource agencies such as PADEP, SHPO, and other stakeholders to facilitate consensus building. Next, our experts used the Secretary of the Interior’s Standards for Rehabilitation to identify acceptable concepts for the rehabilitation. Our technical experts developed a comprehensive solution to address both life-cycle and context sensitive concerns. This included a new latex modified concrete overlay for the roadway, partial deck replacement, and new watertight deck joints for sustained durability. As part of the context sensitive solution, new sidewalks and substructure repairs used tinted concrete to match the original color. Aesthetic period lighting, selected by Philadelphia University and the residents of East Falls, was also incorporated into the final design. A short distance away from this historic arch bridge, M&M also provided similar bridge life-cycle services for the Henry Avenue bridges over SEPTA and CSX rails.

Bridge Geometry
Henry Avenue over Wissahickon Creek / Lincoln Drive
Main Span 300 Feet
Total Length 688 Feet
Henry Avenue over SEPTA / CSX
Main Span 93 Feet
Total Length 562 Feet

“[to be] visited and viewed by every Philadelphian and every Philadelphia guest – an objective point and an outlet for civic pride…

- ”Philadelphia Department of Public Works (circa 1914)