I 90 over Int Nine Mile

Fair Condition62 years old5,499 vehicles/day

Location

StateMontana
CountyMissoula
Location6.8m W Frenchtown
CarriesI 90
CrossesInt Nine Mile
Coordinates47.01941, -114.36738

Condition Ratings

Overall ConditionFair
Deck6 (Satisfactory)
Superstructure8 (Very Good)
Substructure6 (Satisfactory)
Scour CriticalNot applicable

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length124.0 ft (37.8 m)
Max Span41.0 ft (12.5 m)
Deck Width38.4 ft (11.7 m)
Deck Area442.3 sq m
Main Spans3
Year Built1964

Traffic

Avg Daily Traffic5,499 (2023)
Truck Traffic17%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last Inspection524
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure NumberI00090082+06231

Nearby Bridges

I 90 over Int Nine Mile 0.0 mi Fair I 90 over Clark Fork River 0.8 mi Poor HWY 10 W over Ninemile Slide 026 0.8 mi Poor HWY 10 W over Ninemile Creek 035 1.4 mi Poor W Ninemile RD over Ninemile Creek 030 1.5 mi Fair I 90 over Clark Fork River 2.0 mi Fair I 90 over Clark Fork River 2.0 mi Fair Huson RD over Int Huson-i 90 012 2.3 mi Good I 90 over Sep Houle Creek Road 3.5 mi Fair I 90 over Sep Houle Creek Road 3.5 mi Fair