IRR BIA RTE 4 over Four Horns Canal
Good Condition54 years old500 vehicles/day
Location
| State | Montana |
| County | Glacier |
| Location | 8.1 Km N Of Heart Butte |
| Carries | IRR BIA RTE 4 |
| Crosses | Four Horns Canal |
| Coordinates | 48.36147, -112.80447 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 47.6 ft (14.5 m) |
| Max Span | 44.9 ft (13.7 m) |
| Deck Width | 34.1 ft (10.4 m) |
| Deck Area | 150.8 sq m |
| Main Spans | 1 |
| Year Built | 1972 |
Traffic
| Avg Daily Traffic | 500 (2023) |
| Truck Traffic | 10% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 923 |
| Inspection Frequency | Every 24 months |
| Owner | Bureau of Indian Affairs |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 00000000000C108 |