I 90 over Sep S 56th ST W
Fair Condition65 years old12,397 vehicles/day
Location
| State | Montana |
| County | Yellowstone |
| Location | 5.6m W Billings |
| Carries | I 90 |
| Crosses | Sep S 56th ST W |
| Coordinates | 45.70549, -108.65865 |
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 | 152.9 ft (46.6 m) |
| Max Span | 62.0 ft (18.9 m) |
| Deck Width | 31.5 ft (9.6 m) |
| Deck Area | 447.4 sq m |
| Main Spans | 3 |
| Year Built | 1961 (reconstructed 2023) |
Traffic
| Avg Daily Traffic | 12,397 (2023) |
| Truck Traffic | 10% |
| 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 | I00090440+02532 |