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- Northwest, Pacific 3
- Transportation 3
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- Bridges--Design and construction 1
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Region
- Columbia River >> Douglas County >> Washington >> United States 3
- Oregon >> United States 3
- Washington >> United States 2
- Bonneville Dam >> Multnomah County >> Oregon >> United States 1
- Cathlamet Bay >> Clatsop County >> Oregon >> United States 1
- Chehalis River >> Grays Harbor County >> Washington >> United States 1
- Cowlitz River >> Cowlitz County >> Washington >> United States 1
- Grand Coulee Dam >> Okanogan County >> Washington >> United States 1
- Hood River >> Hood River County >> Oregon >> United States 1
- Snake River >> Franklin County >> Washington >> United States 1
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