US 287 over Jefferson River
Fair Condition25 years old1,227 vehicles/day
Location
| State | Montana |
| County | Jefferson |
| Location | 10m SW Three Forks |
| Carries | US 287 |
| Crosses | Jefferson River |
| Coordinates | 45.80367, -111.75161 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 347.4 ft (105.9 m) |
| Max Span | 110.2 ft (33.6 m) |
| Deck Width | 41.7 ft (12.7 m) |
| Deck Area | 1344.9 sq m |
| Main Spans | 3 |
| Year Built | 2001 |
Traffic
| Avg Daily Traffic | 1,227 (2023) |
| Truck Traffic | 13% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | October 2023 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | P00013083+00441 |