Mt HWY 91 over Poindexter Slough
Fair Condition90 years old612 vehicles/day
Location
| State | Montana |
| County | Beaverhead |
| Location | 3m SW Dillon |
| Carries | Mt HWY 91 |
| Crosses | Poindexter Slough |
| Coordinates | 45.18227, -112.67813 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Concrete |
| Design | Tee Beam |
| Total Length | 77.1 ft (23.5 m) |
| Max Span | 25.9 ft (7.9 m) |
| Deck Width | 27.2 ft (8.3 m) |
| Deck Area | 195.1 sq m |
| Main Spans | 3 |
| Year Built | 1936 |
Traffic
| Avg Daily Traffic | 612 (2023) |
| Truck Traffic | 1% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 225 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | S00222002+07511 |