I 90 over Int Superior

Good Condition66 years old3,825 vehicles/day

Location

StateMontana
CountyMineral
LocationSuperior
CarriesI 90
CrossesInt Superior
Coordinates47.19221, -114.89117

Condition Ratings

Overall ConditionGood
Deck7 (Good)
Superstructure7 (Good)
Substructure7 (Good)
Scour CriticalNot applicable

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length153.9 ft (46.9 m)
Max Span61.0 ft (18.6 m)
Deck Width29.5 ft (9 m)
Deck Area422.1 sq m
Main Spans3
Year Built1960

Traffic

Avg Daily Traffic3,825 (2023)
Truck Traffic24%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last Inspection423
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure NumberI00090047+05522

Nearby Bridges

I 90 over Int Superior 0.0 mi Good River ST N over Clark Fork 003 0.3 mi Fair Diamond Match RD over Cedar Creek 1.5 mi Good I 90 over Cedar Creek 1.5 mi Fair I 90 over Cedar Creek 1.5 mi Good I 90 over Clark Fork River 1.8 mi Fair I 90 over Clark Fork River 1.8 mi Fair I 90 over Clark Fork River 2.3 mi Fair I 90 over Clark Fork River 2.3 mi Fair Upham Gulch RD over Cedar Creek 051 2.6 mi Good