Structure 89166000000000 · Walla Walla County, WA
Carries Mud Creek RD over Mud Creek, 0.214 SE Of SR 12.
A culvert 23 ft across. 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, so those are drawn as typical for a culvert.
| State | Washington |
| County | Walla Walla |
| Location | 0.214 SE Of SR 12 |
| Carries | Mud Creek RD |
| Crosses | Mud Creek |
| Coordinates | 46.14631, -118.14020 |
| Material | Aluminum/Wrought Iron/Cast Iron |
| Design | Culvert |
| Total Length | 23.3 ft (7.1 m) |
| Max Span | 23.3 ft (7.1 m) |
| Deck Width | 60.0 ft (18.3 m) |
| Deck Area | 129.9 sq m |
| Main Spans | 1 |
| Year Built | 2020 |
| Avg Daily Traffic | 82 (2024) |
| Truck Traffic | 5% |
| Lanes On Bridge | 2 |
| Last Inspection | September 2024 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Historical significance is not determined |
| Scour Critical | 8 — Stable, low risk |
| Structure Number | 089166000000000 |
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.