When the NCDOT determined it was time to replace the existing bridge, the project was put on an accelerated design and construction schedule. Using our existing open-end contract, Modjeski and Masters was called-on to provide efficient preliminary and final design services for structural, mechanical, and electrical design for the bridge replacement.
The Portageville Bridge, also known as the High Bridge, is considered to be the vital link along the Southern Tier Route, crossing the Genesee River in Letchworth State Park in Portageville, NY. Unfortunately, it is the weakest link on the line. Built in 1875, the historic 820-foot steel viaduct can no longer meet the demands of a Class 1 Heavy Freight Railroad.
The main goal of this project was to ease traffic congestion at this major interchange. Flyover 1, the main bridge of the project, will help to provide a continuous flow of traffic, allowing for a direct merge without stopping. The introduction of spliced U-girder technologies enabled the successful completion the project in a time and cost-efficient manner.