S Boulder RD over Lwr S Boulder River 054
Good Condition18 years old100 vehicles/day
Location
| State | Montana |
| County | Madison |
| Location | 5m S Jefferson Island |
| Carries | S Boulder RD |
| Crosses | Lwr S Boulder River 054 |
| Coordinates | 45.79386, -111.93412 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Tee Beam |
| Total Length | 46.6 ft (14.2 m) |
| Max Span | 44.9 ft (13.7 m) |
| Deck Width | 25.9 ft (7.9 m) |
| Deck Area | 112.2 sq m |
| Main Spans | 1 |
| Year Built | 2008 |
Traffic
| Avg Daily Traffic | 100 (2025) |
| Truck Traffic | 3% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 423 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | L29062001+03001 |