Columbia Bridge Co. of Walla Walla, Washington

8th Street Bridge (Umatilla County, Oregon)
Original Fabricator, 1909
Pin-connected Pratt through truss bridge over Umatilla River on 8th Street in Pendleton
Open to traffic

Sperry Bridge (Nez Perce County, Idaho)
Truss Fabricator, 1908
Pin-connected Pratt through truss bridge over Potlatch River on Mill Street in Kendrick
Open to traffic

Spring Hollow Bridge (Morrow County, Oregon)
Truss Fabricator, 1909
Pin-connected Pratt through truss bridge over Rhea Creek on Spring Hollow Road
Open to pedestrians only

Troy Bridge (Wallowa County, Oregon)
Fabricator & Builder, 1910
Pennsylvania through truss bridge over Grande Ronde River on Redmond Grade Road
Open to pedestrians