I 90 over Keyser Creek
Fair Condition55 years old5,861 vehicles/day
Location
| State | Montana |
| County | Stillwater |
| Location | 1.2m W Columbus |
| Carries | I 90 |
| Crosses | Keyser Creek |
| Coordinates | 45.65472, -109.26600 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 5 (Fair) |
| Superstructure | 7 (Good) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 190.9 ft (58.2 m) |
| Max Span | 76.4 ft (23.3 m) |
| Deck Width | 44.3 ft (13.5 m) |
| Deck Area | 785.7 sq m |
| Main Spans | 3 |
| Year Built | 1971 (reconstructed 2014) |
Traffic
| Avg Daily Traffic | 5,861 (2023) |
| Truck Traffic | 18% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | December 2023 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | I00090407+08621 |