Challenge: Prior to rehabilitation, this bridge was facing structural and safety issues. It was load posted for a 3-ton weight limit, preventing emergency service vehicle and other traffic from crossing the bridge.
Solution: We design the bridge’s rehabilitation, starting with removal of the existing steel through girders and replacing them with new steel I-beams that will be hidden from site under the deck. All deteriorated timber truss members will be replaced
in-kind with new full-sawn timber members. Of the remaining timber members considered to be part of the original historic fabric, 66% require replacement.
We coordinated with PennDOT District 5-0, Schuykill County Commissioners, and Pennsylvania Historical and Museum Commission (PHMC) to discuss the proposed rehabilitation project and receive concurrence of the proposed work from PHMC, since the existing structure is listed on the National Register of Historic Places.
Outcome: Our design will allow for a load posting of 15-tons, ensuring emergency vehicles will be able to cross the bridge safely.