S 43 Fh 20 over Big Hole River
Fair Condition64 years old631 vehicles/day
Location
| State | Montana |
| County | Beaverhead |
| Location | Wisdom |
| Carries | S 43 Fh 20 |
| Crosses | Big Hole River |
| Coordinates | 45.61852, -113.45692 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 214.6 ft (65.4 m) |
| Max Span | 56.4 ft (17.2 m) |
| Deck Width | 29.9 ft (9.1 m) |
| Deck Area | 595.1 sq m |
| Main Spans | 4 |
| Year Built | 1962 |
Traffic
| Avg Daily Traffic | 631 (2023) |
| Truck Traffic | 8% |
| 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 | P00046025+08221 |