Riparia Bridge, Railroad bridge in Whitman County, Washington, United States.
The metal structure stretched 305 meters across the Snake River, featuring three steel trusses with one movable section for river navigation.
George S. Morison designed this bridge for the Oregon Railroad and Navigation Company, completing its construction in 1889 as one of the first steel bridges.
The bridge transformed Riparia into a commercial center where steamboats and trains connected, supporting a community of 100 residents.
The bridge incorporated a hydraulic rotating mechanism on its main support pier, allowing ships to pass through the Snake River.
The structure remained operational until 1969 when the Lower Monumental Dam project submerged both the bridge and the town beneath reservoir waters.
Inception: 1889
GPS coordinates: 46.57491,-118.09026
Latest update: March 15, 2025 16:17
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