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Historic Bridges: I-5

Special Bridge Conditions Legend: R - Former location of relocated bridge. ! - At risk for demolition or destruction. X - Confirmed demolished or collapsed. S  - Dismantled and/or in storage. L -  Severe loss of historic integrity due to alteration.


Results in this list will be limited to the first 200 results. Consider performing a more narrow search from the main BridgeSeek tool if your search here is showing 200 results.

Total Bridges Found: 4

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I-5 Over Skagit River in Mt. Vernon: Skagit County, Washington, United States
Metal 6 Panel Rivet-Connected Warren Through Truss, Fixed and Approach Spans: Concrete Curved T-Beam, Fixed
Length: 1,112 ft. Main Span: 160 ft. Roadway: 56 ft. Main Spans: 4
Built 1955 By: Peter Kiewit and Sons of Omaha, Nebraska
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I-5 Over Columbia River in Portland and Vancouver: Multnomah County, Oregon and Clark County, Washington, United States
Metal 11 Panel Rivet-Connected Parker Through Truss, Movable: Vertical Lift (Span Drive) and Approach Spans: Metal 22 Panel Rivet-Connected Pennsylvania Through Truss, Fixed
Length: 3,538 ft. Main Span: 531 ft. Roadway: 38 ft. Main Spans: 1
Built 1917 By: American Bridge Company of New York, New York and Waddell and Harrington
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I-5 Over Willamette River in Portland: Multnomah County, Oregon, United States
Metal Cantilever 14 Panel Multiple-Type-Connected Warren Deck Truss, Fixed and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Length: 5,280 ft. Main Span: 440 ft. Roadway: 114 ft. Main Spans: 3
Built 1966 By: American Bridge Company of New York, New York and Ivan D. Merchant
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I-5 Over North Umpqua River in Winchester: Douglas County, Oregon, United States
Metal 8 Panel Rivet-Connected Warren Deck Truss, Fixed and Approach Spans: Concrete T-Beam, Fixed
Length: 1,637 ft. Main Span: 140 ft. Roadway: 28 ft. Main Spans: 5
Built 1955 By: Unknown and P. Mervyn Stephenson and Theodore C. Roake

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