Structure L25233000+03001 · Lewis and Clark County, MT
Carries Lyons Creek RD over Lyons Creek 157, 5m S Wolf Creek.
A culvert 24 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 | Montana |
| County | Lewis and Clark |
| Location | 5m S Wolf Creek |
| Carries | Lyons Creek RD |
| Crosses | Lyons Creek 157 |
| Coordinates | 46.93821, -112.12597 |
| Material | Aluminum/Wrought Iron/Cast Iron |
| Design | Culvert |
| Total Length | 23.6 ft (7.2 m) |
| Max Span | 23.6 ft (7.2 m) |
| Deck Area | 54.7 sq m |
| Main Spans | 1 |
| Year Built | 1990 |
| Avg Daily Traffic | 100 (2025) |
| Truck Traffic | 3% |
| Lanes On Bridge | 2 |
| Last Inspection | January 2025 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 8 — Stable, low risk |
| Structure Number | L25233000+03001 |
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.