I 90 over Clark Fork River

Poor Condition61 years old4,088 vehicles/day

Location

StateMontana
CountyMineral
Location9.3m W Alberton
CarriesI 90
CrossesClark Fork River
Coordinates47.01924, -114.65821

Condition Ratings

Overall ConditionPoor
Deck6 (Satisfactory)
Superstructure4 (Poor)
Substructure6 (Satisfactory)
Channel/Waterway8 (Very Good)
Scour Critical8 — Stable, low risk

Physical Characteristics

MaterialSteel Continuous
DesignGirder and Floorbeam
Total Length806.8 ft (245.9 m)
Max Span210.0 ft (64 m)
Deck Width31.8 ft (9.7 m)
Deck Area2385.2 sq m
Main Spans3
Year Built1965

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+02792

Nearby Bridges

I 90 over Clark Fork River 0.0 mi Fair 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 0.8 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