Delaware River Bridge Joint Commission was established and appoints Ralph Modjeski Chief Engineer to lead design efforts for the new bridge.
The Benjamin Franklin Bridge is exemplary of our commitment beyond completion. Our long-term relationship with the DRPA and interstate communities was established over 85 years ago with our founder’s design of the iconic bridge. Today, in addition to the Benjamin Franklin Bridge, Modjeski and Masters is helping the DRPA maintain their other long span facilities. It’s all part of our promise to help build and maintain great bridges.
Ralph Modjeski designed the Benjamin Franklin Bridge by applying Moisseiff’s “deflection theory” to determine the forces carried by the primary load-bearing elements. The bridge officially opens on July 1, 1926, becoming the world’s longest suspension bridge.
Modjeski and Masters designed new high-speed outboard commuter tracks for the Benjamin Franklin Bridge. These new tracks opened in 1936.
Modjeski and Masters designed two additional traffic lanes, reconstructed the toll plaza and Camden approaches, and revamped the lighting and electrical systems of the high speed transit line.
Modjeski and Masters staff utilize the latest practices and methodologies to determine the factor of safety of the main cables.
Modjeski and Masters was selected for the latest biennial inspection contract for the iconic structure. This is a continuation of multiple inspections performed by Modjeski and Masters on the bridge since its original design.