Lewis & Clark Bridge
Photos
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Lewis & Clark Bridge July 20, 2008 Photo taken by Michael Goff in July 2008 |
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Longview Bridge From Upstream Side In Elevation Photo taken by Historic American Engineering Record |
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Storm Clearing Over Longview Bridge Looking East Photo taken by Historic American Engineering Record |
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Perspective View Looking North Of Main Cantilever Span Photo taken by Historic American Engineering Record |
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Full Span View Showing Approaches And Highway On South Bank Of Columbia River Photo taken by Historic American Engineering Record |
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Detail Of South Tower Of Main Cantilever Span Photo taken by Historic American Engineering Record |
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Approach Tower Detail Of Pin Connection To Concrete Pier, North Side Of The River Photo taken by Historic American Engineering Record |
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Approach Viaduct North End Of Bridge Photo taken by Historic American Engineering Record |
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South Approach In Elevation Looking East Photo taken by Historic American Engineering Record |
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Southernmost Truss Spans Of South Approach Looking West Photo taken by Historic American Engineering Record |
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Details Of Bridge Pier Southern Approach Span Photo taken by Historic American Engineering Record |
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Oblique Perspective From South Of Southern Approach Span And Main Span Photo taken by Historic American Engineering Record |
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Detail Of North End Tower To Main Span Photo taken by Historic American Engineering Record |
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Oblique View Of Main Span Photo taken by Historic American Engineering Record |
Description
The Lewis and Clark Bridge, designed by engineer Joseph B. Strauss, was at the time of construction the longest cantilever span in North America with its 1200-foot central section. Extreme vertical and horizontal shipping channels requirements requested by Portland, Oregon, as a means to prevent the bridges construction created the reason for such an imposing structure.(Historic American Engineering Record – WA-89)
Facts
- Overview
- Cantilevered through truss bridge over Columbia River on WA 433 at Longview
- Status
- Open to traffic
- History
- Built 1929; rehabilitated 2003
- Builders
- - Bethlehem Steel Co. (General Contractor and Steel Fabricator)
- J.H. Pomeroy and Co. (Steel Erector)
- Joseph Strauss (Engineer)
- Lindstrom and Feigensen (Concrete Sub-Contractor)
- Pacific Bridge Co. (Substructure Contractor)
- Wallace Bridge and Structural Steel Co. (Steel Fabricator)
- Design
- The Lewis and Clark Bridge is a cantilevered through truss bridge over the Columbia River between Longview, Washington and Rainier, Oregon. The bridge has a main cantilevered truss span of 1200-feet with 760-foot anchorage spans on each side of the main span. The main spans of the bridge are approached on the north by 1500-feet of steel trestle and a 168-foot steel Warren deck truss span. The south approach consists of 5 of steel Warren deck truss approach spans measuring a total of 926-feet and a single 28-foot steel girder span.
- Dimensions
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Length of largest span: 1,200.2 ft.
Total length: 5,478.3 ft.
Deck width: 34.1 ft.
Vertical clearance above deck: 20.0 ft.
- Also called
- Longview Bridge
- Approximate latitude, longitude
- +46.10223, -122.96413 (decimal degrees)
46°06'08" N, 122°57'51" W (degrees°minutes'seconds") - Approximate UTM coordinates
- 10/502772/5105406 (zone/easting/northing)
- USGS topographic map
- Rainier
- Inventory number
- BH 34198 (Bridgehunter.com ID)
- Inspection (as of 07/2008)
- Deck condition rating: Satisfactory (6 out of 9)
Superstructure condition rating: Satisfactory (6 out of 9)
Substructure condition rating: Fair (5 out of 9)
Sufficiency rating: 62.0 (out of 100) - Average daily traffic (as of 2007)
- 20,606
Update Log
- April 25, 2010: New Street View added by Nathan Holth
- December 22, 2008: New photos from James Baughn
- July 21, 2008: New photo from Michael Goff
- July 7, 2008: Updated by Michael Goff
Sources
- Michael Goff - michael [dot] goff [at] odot [dot] state [dot] or [dot] us
- HAER WA-89 - Longview Bridge
- James Baughn - webmaster [at] bridgehunter [dot] com
- Wikipedia - Lewis and Clark Bridge
- Nathan Holth