Boston Bridge, Cantilever road bridge in Allegheny County, Pennsylvania
The Boston Bridge spans 1,182 feet across the Youghiogheny River, connecting Versailles and Elizabeth Township with two vehicle lanes and pedestrian walkways.
Fort Pitt Bridge Works constructed this metal cantilever bridge in 1931, featuring an 18-panel rivet-connected Warren through truss design that spans 420 feet.
The bridge carries Pennsylvania Route 48, known as Orange Belt, and marks mile 19.1 of the Youghiogheny River Trail, a former P&LE railroad path.
The structure maintains its original pedestrian railings and incorporates New Jersey barriers to shield the trusses from vehicle impacts while serving daily traffic needs.
The bridge's sway bracing forms large arch shapes near the towers, while the top chord follows a smooth curve that differs from standard cantilever designs.
Location: Allegheny County
Inception: 1931
Official opening: 1931
GPS coordinates: 40.31280,-79.82830
Latest update: November 28, 2025 14:29
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