I 90 over Sep Bearmouth Road

Good Condition56 years old13,081 vehicles/day

Location

StateMontana
CountyGranite
Location10.5m W Drummond
CarriesI 90
CrossesSep Bearmouth Road
Coordinates46.71161, -113.33055

Condition Ratings

Overall ConditionGood
Deck7 (Good)
Superstructure7 (Good)
Substructure8 (Very Good)
Scour CriticalNot applicable

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length119.1 ft (36.3 m)
Max Span45.9 ft (14 m)
Deck Width78.1 ft (23.8 m)
Deck Area863.9 sq m
Main Spans3
Year Built1970

Traffic

Avg Daily Traffic13,081 (2023)
Truck Traffic18%
Lanes On Bridge4
Lanes Under Bridge2

Inspection & Ownership

Last Inspection524
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure NumberI00090143+06511

Nearby Bridges

Bear Gulch RD over Clark Fork River 002 0.0 mi Poor I 90 over Drainage 0.8 mi Good I 90 over Antelope Creek 0.8 mi Poor I 90 over Harvey Creek 2.0 mi Good I 90 over Clark Fork River 4.3 mi Poor Frontage Road 153 over Clark Fork River 034 4.8 mi Fair I 90 over Int Bearmouth 4.9 mi Good I 90 over Int Bearmouth 4.9 mi Fair