IRR BIA RTE 4 over Tongue River
Fair Condition56 years old800 vehicles/day
Location
| State | Montana |
| County | Rosebud |
| Location | At Birney Village |
| Carries | IRR BIA RTE 4 |
| Crosses | Tongue River |
| Coordinates | 45.41191, -106.45764 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 7 (Good) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 200.5 ft (61.1 m) |
| Max Span | 66.9 ft (20.4 m) |
| Deck Width | 34.4 ft (10.5 m) |
| Deck Area | 641.5 sq m |
| Main Spans | 3 |
| Year Built | 1970 |
Traffic
| Avg Daily Traffic | 800 (2024) |
| Truck Traffic | 10% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 624 |
| Inspection Frequency | Every 24 months |
| Owner | Bureau of Indian Affairs |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 00000000000C703 |