Rehabilitation of the Pennsylvania State Route 49 Bridge Over the Cowanesque River

Author(s): J. Patoczka, J. Scheri, E. Alverson
IBC - International Bridge Conference 2015 – June 7 – 11, 2015, Engineer's Society of Western Pennsylvania.

Abstract

The bridge rehabilitation project was delayed over three months, as poor stability of the riverbank precluded the use of the originally proposed foundations for the temporary truss bridge that would carry traffic during construction. An innovative design, consisting of steel-framed pile cap foundations and geosynthetically reinforced embankments/backwalls, addressed all site constraints, which included riverbank stability, restrictive site geometry, and utility conflicts. Ultimately, the Contractor completed the rehabilitation project within seven days of the original deadline.