I 90 over Clark Fork River

Fair Condition45 years old4,088 vehicles/day

Location

StateMontana
CountyMineral
Location9.3m W Alberton
CarriesI 90
CrossesClark Fork River
Coordinates47.01905, -114.65838

Condition Ratings

Overall ConditionFair
Deck7 (Good)
Superstructure5 (Fair)
Substructure7 (Good)
Channel/Waterway8 (Very Good)
Scour Critical8 — Stable, low risk

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length866.8 ft (264.2 m)
Max Span190.0 ft (57.9 m)
Deck Width44.0 ft (13.4 m)
Deck Area3540.3 sq m
Main Spans5
Year Built1981

Traffic

Avg Daily Traffic4,088 (2023)
Truck Traffic23%
Lanes On Bridge2

Inspection & Ownership

Last Inspection523
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure NumberI00090066+02791

Nearby Bridges

I 90 over Clark Fork River 0.0 mi Poor I 90 over Rr 0.1 mi Fair I 90 over Rr 0.2 mi Fair Fish Creek RD over Int Fish Creek-i 90 009 0.6 mi Fair I 90 over Sep Elizabeth LN 0.7 mi Poor I 90 over Sep Elizabeth LN 0.7 mi Good Rivulet RD over Fish Creek 058 1.9 mi Good I 90 over Local-rr 3.7 mi Fair I 90 over Local-rr 3.7 mi Fair I 90 over Int Tarkio County Road 3.8 mi Fair