I 15 over Drainage IRR Ditch
Fair Condition53 years old3,915 vehicles/day
Location
| State | Montana |
| County | Beaverhead |
| Location | Dillon |
| Carries | I 15 |
| Crosses | Drainage IRR Ditch |
| Coordinates | 45.23531, -112.63953 |
Condition Ratings
| Overall Condition | Fair |
| Channel/Waterway | 8 (Very Good) |
| Culvert | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete |
| Design | Culvert |
| Total Length | 23.0 ft (7 m) |
| Max Span | 23.0 ft (7 m) |
| Deck Area | 168.7 sq m |
| Main Spans | 1 |
| Year Built | 1973 |
Traffic
| Avg Daily Traffic | 3,915 (2023) |
| Truck Traffic | 23% |
| Lanes On Bridge | 4 |
Inspection & Ownership
| Last Inspection | 324 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | I00015064+04001 |