I 90 over Greenough Dr-rattlesnake
Fair Condition60 years old15,284 vehicles/day
Location
| State | Montana |
| County | Missoula |
| Location | Missoula |
| Carries | I 90 |
| Crosses | Greenough Dr-rattlesnake |
| Coordinates | 46.87249, -113.98395 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| 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 | 244.8 ft (74.6 m) |
| Max Span | 101.4 ft (30.9 m) |
| Deck Width | 45.9 ft (14 m) |
| Deck Area | 1044.4 sq m |
| Main Spans | 4 |
| Year Built | 1966 |
Traffic
| Avg Daily Traffic | 15,284 (2023) |
| Truck Traffic | 8% |
| Lanes On Bridge | 2 |
| Lanes Under Bridge | 2 |
Inspection & Ownership
| Last Inspection | October 2024 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | I00090105+04672 |