Structure 1852A007 18305 · Malheur County, OR
Carries US 20 (hwy 007) over Chimney Creek(7th Xing), 2.9 Mi. E Harney Co Line.
Set by its lowest-rated component: Superstructure and Substructure at 6 of 9.
How ratings work45 ft end to end, longest span 23 ft. Lengths and the car on the deck are drawn to the same scale. 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 channel-beam bridge.
| State | Oregon |
| County | Malheur |
| Location | 2.9 Mi. E Harney Co Line |
| Carries | US 20 (hwy 007) |
| Crosses | Chimney Creek(7th Xing) |
| Coordinates | 43.77437, -118.18506 |
| Material | Concrete |
| Design | Channel Beam |
| Total Length | 45.3 ft (13.8 m) |
| Max Span | 23.0 ft (7 m) |
| Deck Width | 39.4 ft (12 m) |
| Deck Area | 165.6 sq m |
| Main Spans | 2 |
| Year Built | 1966 |
| Avg Daily Traffic | 1,475 (2022) |
| Truck Traffic | 28% |
| Lanes On Bridge | 2 |
| Last Inspection | June 2024 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Historical significance is not determined |
| Scour Critical | 3 — Scour critical |
| Structure Number | 01852A007 18305 |
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.