Structure 9555 064 02632 · Multnomah County, OR
Carries HWY 064 over Columbia River, At Ore-wash Line.
Set by its lowest-rated component: Deck and Superstructure and Substructure at 6 of 9.
How ratings work7,434 ft end to end, longest span 600 ft: about 21 football fields, or 1.4 miles. Lengths are drawn to scale; at this length a semi-truck would be a speck. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a box-beam bridge.
| State | Oregon |
| County | Multnomah |
| Location | At Ore-wash Line |
| Carries | HWY 064 |
| Crosses | Columbia River |
| Coordinates | 45.59170, -122.54779 |
| Material | Prestressed Concrete Continuous |
| Design | Box Beam - Multiple |
| Total Length | 7434.1 ft (2265.9 m) |
| Max Span | 600.1 ft (182.9 m) |
| Deck Width | 150.6 ft (45.9 m) |
| Deck Area | 104004.8 sq m |
| Main Spans | 23 |
| Year Built | 1982 |
| Avg Daily Traffic | 148,936 (2022) |
| Truck Traffic | 6% |
| Lanes On Bridge | 8 |
| Lanes Under Bridge | 8 |
| Last Inspection | August 2024 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Historical significance is not determined |
| Scour Critical | 3 — Scour critical |
| Structure Number | 09555 064 02632 |
Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."
A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.