Ross Island Bridge, Cantilever bridge in Portland, United States
The Ross Island Bridge stretches 3,729 feet across the Willamette River, connecting southwest and southeast Portland through a steel truss construction.
Engineer Gustav Lindenthal designed this bridge in 1926 to address the increasing automobile traffic needs of Portland during the early twentieth century.
The bridge received its name from its location near Ross Island, honoring Sherry Ross, an early Portland settler who influenced local development.
The structure carries U.S. Route 26 and includes two 24-inch water mains that transport water from Bull Run Reservoir to Portland's west side.
Despite its appearance as a deck arch bridge, this structure employs a rare cantilever deck truss design with steel panels extending from piers.
Location: Portland
Inception: December 21, 1926
Official opening: December 21, 1926
Height: 37.5 m
Length: 1,130 m
GPS coordinates: 45.50120,-122.66500
Latest update: May 11, 2025 16:15
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