Photos
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Steel Bridge from the west bank of the Willamette River Photo taken by Michael Goff on April 11, 2008 |
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Steel Bridge photo taken from the Broadway Bridge Photo taken by Michael Goff on April 11, 2008 |
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Steel Bridge from the east bank of the Willamette River Photo taken by Michael Goff on September 29, 2008 |
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Multi-Modal Bridge Light Rail, Vehicle, and Pedestrian traffic on the top deck. Heavy Rail and Pedestrian Traffic on the Bottom Deck. Photo taken by Michael Goff on April 16, 2009 |
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Portland MAX Lightrail coming off the lift span. Photo taken by Michael Goff on April 16, 2009 |
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Steel Bridge from the east Photo taken by Michael Goff on April 16, 2009 |
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Lower Deck Multi-use pedestrian path on the left, Union Pacific Railroad on the right. Photo taken by Michael Goff on April 16, 2009 |
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Photo taken by Historic American Engineering Record |
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Photo taken by Historic American Engineering Record |
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Photo taken by Historic American Engineering Record |
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General View From Northwest Photo taken by Historic American Engineering Record |
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General View From Broadway Bridge To The North Photo taken by Historic American Engineering Record |
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General View From Broadway Bridge To The North Photo taken by Historic American Engineering Record |
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Detail, Central Span In Raised Position Photo taken by Historic American Engineering Record |
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Detail, Pulleys And Shin Wheels For Lower Deck Photo taken by Historic American Engineering Record |
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Detail, Center Span Drive Gears Photo taken by Historic American Engineering Record |
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View Of Lift Span Interior Photo taken by Historic American Engineering Record |
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Western Portal From Railroad Level Photo taken by Historic American Engineering Record |
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General View From Broadway Bridge To The North Photo taken by Historic American Engineering Record |
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Photo taken by Historic American Engineering Record |
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Photo taken by Historic American Engineering Record |
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Photo taken by Historic American Engineering Record |
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Photo taken by Historic American Engineering Record |
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Photo taken by Historic American Engineering Record |
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Photo taken by Historic American Engineering Record |
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Photo taken by Historic American Engineering Record |
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Photo taken by Historic American Engineering Record |
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Photo taken by Historic American Engineering Record |
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Photo taken by Historic American Engineering Record |
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Photo taken by Historic American Engineering Record |
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Photo taken by Historic American Engineering Record |
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Photo taken by Historic American Engineering Record |
Facts
- Overview
- Through truss bridge over Willamette River on OR 99W in Portland
- Location
- Portland, Multnomah County, Oregon
- Status
- Open to traffic
- History
- Built 1912
- Builders
- - Oregon-Washington Railroad and Navigation Co. (Contractor/Owner)
- Waddell & Harrington (Engineers)
- Design
- The Steel Bridge is the only double-deck bridge with independent lifts in the world and the second oldest vertical lift bridge in North America, after the nearby Hawthorne Bridge.
At low river levels the lower deck is 26 ft above the water and 163 ft of vertical clearance is provided when both are raised. Because of the independent lifts, the lower deck can be raised to 72 ft, telescoping into the upper deck but not disturbing it.
Information from Multnomah County and Wikipedia - Dimensions
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Length of largest span: 299.9 ft.
Total length: 799.9 ft.
Deck width: 49.9 ft.
Vertical clearance above deck: 17.8 ft.
- Recognition
- Eligible for the National Register of Historic Places
- Approximate latitude, longitude
- +45.52750, -122.66889 (decimal degrees)
45°31'39" N, 122°40'08" W (degrees°minutes'seconds") - Approximate UTM coordinates
- 10/525856/5041604 (zone/easting/northing)
- USGS topographic map
- Portland
- Inventory number
- BH 29900 (Bridgehunter.com ID)
- Inspection (as of 01/2005)
- Deck condition rating: Fair (5 out of 9)
Appraisal: Functionally obsolete
Sufficiency rating: 68.1 (out of 100) - Average daily traffic (as of 2004)
- 23,278
Update Log
- April 20, 2009: Posted HAER photos
- April 16, 2009: New photos from Michael Goff
- October 8, 2008: Updated by Michael Goff: Added Design Description
- September 29, 2008: New photo from Michael Goff
- September 22, 2008: Updated by Michael Goff
- June 25, 2008: New photos from Michael Goff
Sources
- James Baughn - webmaster [at] bridgehunter [dot] com
- Michael Goff - michael [dot] goff [at] odot [dot] state [dot] or [dot] us
- Wikipedia
- HAER OR-21 - Steel Bridge, Spanning Willamette River at State Route 99, Portland, Multnomah County, OR