I 90 over Int Tarkio County Road

Fair Condition67 years old4,088 vehicles/day

Location

StateMontana
CountyMineral
Location13.7m W Alberton
CarriesI 90
CrossesInt Tarkio County Road
Coordinates47.02587, -114.73935

Condition Ratings

Overall ConditionFair
Deck6 (Satisfactory)
Superstructure7 (Good)
Substructure6 (Satisfactory)
Scour CriticalNot applicable

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length129.9 ft (39.6 m)
Max Span45.9 ft (14 m)
Deck Width40.0 ft (12.2 m)
Deck Area483.1 sq m
Main Spans3
Year Built1959 (reconstructed 2011)

Traffic

Avg Daily Traffic4,088 (2023)
Truck Traffic23%
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 NumberI00090061+07931

Nearby Bridges

I 90 over Int Tarkio County Road 0.0 mi Fair Mullan RD E over Nemote Creek 006 2.1 mi Poor Rivulet RD over Fish Creek 058 2.5 mi Good I 90 over Sep Elizabeth LN 3.1 mi Good I 90 over Clark Fork River 3.2 mi Fair I 90 over Clark Fork River 3.2 mi Fair I 90 over Sep Elizabeth LN 3.2 mi Poor I 90 over Clark Fork River 3.8 mi Fair I 90 over Clark Fork River 3.8 mi Poor I 90 over Rr 4.0 mi Fair