Structure C223 · Big Horn County, MT
Carries IRR BIA RTE 205 over Upper Lodge Grass Creek, 6.8 Km NW Jct 205 & 418.
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 | Montana |
| County | Big Horn |
| Location | 6.8 Km NW Jct 205 & 418 |
| Carries | IRR BIA RTE 205 |
| Crosses | Upper Lodge Grass Creek |
| Coordinates | 45.04208, -107.68703 |
| Material | Aluminum/Wrought Iron/Cast Iron |
| Design | Culvert |
| Total Length | 23.0 ft (7 m) |
| Max Span | 23.0 ft (7 m) |
| Deck Width | 28.9 ft (8.8 m) |
| Deck Area | 61.6 sq m |
| Main Spans | 1 |
| Year Built | 1994 |
| Avg Daily Traffic | 12 (2024) |
| Truck Traffic | 10% |
| Lanes On Bridge | 2 |
| Last Inspection | June 2024 |
| Inspection Frequency | Every 24 months |
| Owner | Bureau of Indian Affairs |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 5 — Stable for scour |
| Structure Number | 00000000000C223 |
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.