Browns Bridge RD over Big Hole River 123
Poor Condition111 years old100 vehicles/day
Location
| State | Montana |
| County | Beaverhead |
| Location | 6.2m S Melrose |
| Carries | Browns Bridge RD |
| Crosses | Big Hole River 123 |
| Coordinates | 45.54731, -112.69344 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 5 (Fair) |
| Superstructure | 4 (Poor) |
| Substructure | 4 (Poor) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 2 — Bridge closed (monitoring) |
Physical Characteristics
| Material | Steel |
| Design | Truss - Thru |
| Total Length | 174.9 ft (53.3 m) |
| Max Span | 174.9 ft (53.3 m) |
| Deck Width | 16.1 ft (4.9 m) |
| Deck Area | 261.2 sq m |
| Main Spans | 1 |
| Year Built | 1915 |
Traffic
| Avg Daily Traffic | 100 (2025) |
| Truck Traffic | 3% |
| Lanes On Bridge | 1 |
Inspection & Ownership
| Last Inspection | 724 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | L01320003+01001 |