Big Swamp CR RD / over Big Hole River 089
Poor Condition101 years old100 vehicles/day
Location
| State | Montana |
| County | Beaverhead |
| Location | 5m NW Jackson |
| Carries | Big Swamp CR RD / |
| Crosses | Big Hole River 089 |
| Coordinates | 45.44054, -113.45654 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 5 (Fair) |
| Superstructure | 4 (Poor) |
| Substructure | 3 (Serious) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Steel |
| Design | Truss - Thru |
| Total Length | 100.1 ft (30.5 m) |
| Max Span | 100.1 ft (30.5 m) |
| Deck Width | 15.4 ft (4.7 m) |
| Deck Area | 143.3 sq m |
| Main Spans | 1 |
| Year Built | 1925 (reconstructed 2024) |
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 | L01085000+03001 |