US 87 over Otter Creek
Good Condition67 years old2,314 vehicles/day
Location
| State | Montana |
| County | Cascade |
| Location | 3m SE Belt |
| Carries | US 87 |
| Crosses | Otter Creek |
| Coordinates | 47.34255, -110.88623 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 8 (Very 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 | 119.1 ft (36.3 m) |
| Max Span | 46.6 ft (14.2 m) |
| Deck Width | 30.8 ft (9.4 m) |
| Deck Area | 341.2 sq m |
| Main Spans | 3 |
| Year Built | 1959 |
Traffic
| Avg Daily Traffic | 2,314 (2023) |
| Truck Traffic | 15% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 624 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | P00057000+06761 |