General Information
| Other name(s): | Columbia River Bridge at Grand Coulee Dam |
|---|---|
| Beginning of works: | 1934 |
| Completion: | March 1935 |
| Status: | in use |
Project Type
| Function / usage: |
Road bridge |
|---|---|
| Structure: |
Cantilever truss bridge |
| Material: |
Steel bridge |
| Structure: |
Non-parallel chord truss bridge |
| Plan view: |
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| Support conditions: |
for registered users |
| Material: |
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Awards and Distinctions
| 1982 |
for registered users |
|---|
Location
| Location: |
Grand Coulee, Grant County, Washington, USA Okanogan County, Washington, USA |
|---|---|
| Address: | WA 155 |
| Crosses: |
|
| Coordinates: | 47° 57' 55.50" N 118° 58' 56.41" W |
Technical Information
Dimensions
| main span | 167.61 m | |
| total length | 324.9 m | |
| number of lanes | 2 | |
| deck | deck width | 6.19 m |
| piers | number | 2 |
Materials
| piers |
reinforced concrete
|
|---|---|
| truss |
steel
|
Excerpt from Wikipedia
The Grand Coulee Bridge, or Columbia River Bridge at Grand Coulee Dam, is a through-cantilever steel truss bridge built in 1934–35. It carries State Route 155 across the Columbia River immediately below Grand Coulee Dam, near the city of Grand Coulee, Washington. It was added to the National Register of Historic Places in 1982.
The bridge was built to transport heavy equipment across the Columbia River during the construction of the dam, and thereafter as a permanent highway bridge. As such, it was designed to carry a heavier load than was typical. The bridge is supported by two concrete piers, about 150 feet (46 m) high. During construction, one of the piers began to tilt, probably due to fine glacial material under the gravel. Additional supports were added as a temporary measure. It employed between 1,000 and 1,200 men. The piers were later taken down to bedrock using pneumatic caissons.
Text imported from Wikipedia article "Grand Coulee Bridge" and modified on February 1, 2024 according to the CC-BY-SA 4.0 International license.
Participants
Currently there is no information available about persons or companies having participated in this project.
Relevant Web Sites
Relevant Publications
- : Spanning Washington. Historic Highway Bridges of the Evergreen State. Washington State University Press, Pullman (USA), pp. 117.
- About this
data sheet - Structure-ID
20031756 - Published on:
16/09/2007 - Last updated on:
14/01/2024
