IRR BIA RTE 8 over Oswego South Main Canal
Good Condition43 years old100 vehicles/day
Location
| State | Montana |
| County | Valley |
| Location | 3.2 Km East Of Oswego |
| Carries | IRR BIA RTE 8 |
| Crosses | Oswego South Main Canal |
| Coordinates | 48.05031, -105.84403 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 8 (Very Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 42.3 ft (12.9 m) |
| Max Span | 40.0 ft (12.2 m) |
| Deck Width | 34.1 ft (10.4 m) |
| Deck Area | 134.2 sq m |
| Main Spans | 1 |
| Year Built | 1983 |
Traffic
| Avg Daily Traffic | 100 (2024) |
| Truck Traffic | 10% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | October 2024 |
| Inspection Frequency | Every 24 months |
| Owner | Bureau of Indian Affairs |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 00000000000C617 |