W Main ST over Bitterroot River
Fair Condition58 years old2,746 vehicles/day
Location
| State | Montana |
| County | Ravalli |
| Location | W Hamilton |
| Carries | W Main ST |
| Crosses | Bitterroot River |
| Coordinates | 46.24686, -114.17748 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 5 (Fair) |
| Superstructure | 7 (Good) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 304.5 ft (92.8 m) |
| Max Span | 102.0 ft (31.1 m) |
| Deck Width | 46.3 ft (14.1 m) |
| Deck Area | 1308.5 sq m |
| Main Spans | 4 |
| Year Built | 1968 |
Traffic
| Avg Daily Traffic | 2,746 (2023) |
| 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 | S00531005+04001 |