IRR - US 89 over ST Marys River
Fair Condition70 years old2,355 vehicles/day
Location
| State | Montana |
| County | Glacier |
| Location | 2m SE Babb |
| Carries | IRR - US 89 |
| Crosses | ST Marys River |
| Coordinates | 48.84385, -113.41774 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 313.0 ft (95.4 m) |
| Max Span | 120.1 ft (36.6 m) |
| Deck Width | 30.5 ft (9.3 m) |
| Deck Area | 887.2 sq m |
| Main Spans | 3 |
| Year Built | 1956 (reconstructed 1998) |
Traffic
| Avg Daily Traffic | 2,355 (2023) |
| Truck Traffic | 1% |
| Lanes On 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 | P00058038+06171 |