I 15 over Poindexter Slough
Fair Condition43 years old2,863 vehicles/day
Location
| State | Montana |
| County | Beaverhead |
| Location | 2.5m S Dillon |
| Carries | I 15 |
| Crosses | Poindexter Slough |
| Coordinates | 45.18836, -112.67950 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 7 (Good) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 73.2 ft (22.3 m) |
| Max Span | 69.9 ft (21.3 m) |
| Deck Width | 44.3 ft (13.5 m) |
| Deck Area | 301.1 sq m |
| Main Spans | 1 |
| Year Built | 1983 |
Traffic
| Avg Daily Traffic | 2,863 (2023) |
| Truck Traffic | 23% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 124 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | I00015060+08831 |