IRR - S 451 over Little Bighorn River
Fair Condition76 years old382 vehicles/day
Location
| State | Montana |
| County | Big Horn |
| Location | 4m N Wyola |
| Carries | IRR - S 451 |
| Crosses | Little Bighorn River |
| Coordinates | 45.18081, -107.38796 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 120.1 ft (36.6 m) |
| Max Span | 60.0 ft (18.3 m) |
| Deck Width | 35.4 ft (10.8 m) |
| Deck Area | 395.3 sq m |
| Main Spans | 2 |
| Year Built | 1950 |
Traffic
| Avg Daily Traffic | 382 (2023) |
| Truck Traffic | 3% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | October 2024 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | S00451024+09811 |