IRR - US 87 over School Section Coulee
Good Condition56 years old1,694 vehicles/day
Location
| State | Montana |
| County | Chouteau |
| Location | 4m N Big Sandy |
| Carries | IRR - US 87 |
| Crosses | School Section Coulee |
| Coordinates | 48.24522, -110.05703 |
Condition Ratings
| Overall Condition | Good |
| Channel/Waterway | 7 (Good) |
| Culvert | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel |
| Design | Culvert |
| Total Length | 23.6 ft (7.2 m) |
| Max Span | 9.8 ft (3 m) |
| Deck Width | 164.0 ft (50 m) |
| Deck Area | 360 sq m |
| Main Spans | 2 |
| Year Built | 1970 |
Traffic
| Avg Daily Traffic | 1,694 (2023) |
| Truck Traffic | 8% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 424 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000008092 |