Columbia River Interstate Bridge

Photos 

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Overview Photos taken 1993 by Jet Lowe for the Historic American Engineering Record

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Lift spans

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Portal

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Interstate Bridge from northeast Photo taken by Michael Goff on January 21, 2009 View high-res version

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Interstate Bridge from top the of the northbound lift span Photo taken by Michael Goff on January 21, 2009 View high-res version

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Interstate Bridge - Lift Spans from northwest Photo taken by Michael Goff on March 25, 2007 View high-res version

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Interstate Bridge - At Night from northeast Photo taken by Michael Goff on December 28, 2007 View high-res version

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Interstate Bridge from BNSF 9.6 Bridge Mt. Hood in the background Photo taken by Michael Goff on November 23,2008 View high-res version

Map 

Vicinity map Map links: Google Maps Yahoo! Maps TopoZone Terraserver USA

Facts 

Overview

Pair of vertical lift bridges over the Columbia River on I-5 between Vancouver and Portland in Portland

Status

Open to traffic

History

Northbound bridge built 1917; southbound bridge built 1958

Builders

- American Bridge Co. of New York
- Pacific Bridge Co.
- Porter Brothers Co.
- Waddell & Harrington

Design

Vertical lift Parker through truss

Dimensions

Length of largest span: 531.0 ft.
Total length: 3,538.2 ft.
Deck width: 38.1 ft.
Vertical clearance above deck: 15.5 ft.

Recognition

Eligible for the National Register of Historic Places

Approximate latitude, longitude

+45.61778, -122.67500   (decimal degrees)
45°37'04" N, 122°40'30" W   (degrees°minutes'seconds")

Approximate UTM coordinates

10/525338/5051632 (zone/easting/northing)

USGS topographic map

Portland

Inventory number

BH 30106 (Bridgehunter.com ID)

Inspection (as of 02/2006)

Deck condition rating: Fair (5 out of 9)
Superstructure condition rating: Satisfactory (6 out of 9)
Substructure condition rating: Fair (5 out of 9)
Appraisal: Functionally obsolete
Sufficiency rating: 31.5 (out of 100)

Average daily traffic (as of 2004)

62,250

Categories 

Update Log 

• January 21, 2009: New photos from Michael Goff
• January 7, 2009: New photo from Michael Goff
• July 17, 2008: New photos from Michael Goff
• July 8, 2008: Updated by Michael Goff
• August 18, 2006: Posted HAER photos

Sources 

• HAER WA-86 - Vancouver-Portland Interstate Bridge
• Wikipedia
• Michael Goff - michael [dot] goff [at] odot [dot] state [dot] or [dot] us
• Columbia River Crossing - Information on the future of the Interstate Bridge

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