IRR - I 90 over Int Dunmore
Fair Condition67 years old4,473 vehicles/day
Location
| State | Montana |
| County | Big Horn |
| Location | 5.6m N Crow Agency |
| Carries | IRR - I 90 |
| Crosses | Int Dunmore |
| Coordinates | 45.68019, -107.50477 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 119.1 ft (36.3 m) |
| Max Span | 46.9 ft (14.3 m) |
| Deck Width | 41.7 ft (12.7 m) |
| Deck Area | 461.0 sq m |
| Main Spans | 3 |
| Year Built | 1959 |
Traffic
| Avg Daily Traffic | 4,473 (2023) |
| Truck Traffic | 18% |
| Lanes On Bridge | 2 |
| Lanes Under Bridge | 2 |
Inspection & Ownership
| Last Inspection | October 2023 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | I00090503+02871 |