Mowat Construction Company: Projects
- Alaska
- Washington
- Fremont Bridge
- Newport Way to I90 Widening
- Green River Bridge
- Snohomish Machias Bridge
- Sauk River Bridge Replacement
- York Bridge Replacement
- Aurora Bridge
- Edgewick Bridge Replacement
- SR 16, Union to Jackson Steel
- High Bridge Replacement
- Nuclear Fuel Canister Storage Building
- SR 16, Sprague to Snake Lake
- Meydenbauer Bridge Replacement
- I-5, 2nd St. Bridge
- SR 16, Union to Jackson
- York Bridge Superstructure
- Seattle Freeway Park
- Seattle Westlake Park
- Weller Street Elevated Pedestrian Walkway
- Eastgate Transit Access
- Seatac South 160th St. Loop
- Oregon
- Idaho
- Nevada
- Alaska
Mowat Construction Company: Projects
Willamette River (Broadway) Bridge
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Phase: |
4, 5, 6, & 7 (Portland) |
| Client/Owner: | Oregon Department of Transportation Multnomah County |
| Location: | Portland, OR |
| Cost: | $22,500,000 (Total Contract Value) |
The Broadway Bridge was originally constructed in 1913 with an overall length of 1,700 LF and consisting of six fixed truss spans plus one 300 LF "rawl" bascule twin leaf draw span. Our project involved renovation of the bridge approaches and draw span. On the fixed spans approaching both sides of the draw span, a portion of the concrete road deck and sidewalk deck was replaced, and the steel stringers repaired or replaced. The draw span renovation included new stringers and an experimental "fiber reinforced polymer" deck system with overlay. The sidewalk stringers and metal deck system were also repaired or replaced. All lead based paint was removed from the bridge steel below road deck level and repainted within containment structures. Maintenance of traffic included opening both leafs of the draw span for ship traffic every 4th day. Balancing the draw span leafs for opening required utilizing 500,000 pounds of concrete block weights strategically placed, affixed, adjusted, and removed as renovation progressed through removal then reconstruction of bridge sections.