I 90 over Clark Fork River

Poor Condition42 years old3,719 vehicles/day

Location

StateMontana
CountyMineral
Location3.7m W Superior
CarriesI 90
CrossesClark Fork River
Coordinates47.22092, -114.96120

Condition Ratings

Overall ConditionPoor
Deck4 (Poor)
Superstructure5 (Fair)
Substructure5 (Fair)
Channel/Waterway6 (Satisfactory)
Scour Critical5 — Stable for scour

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length1091.9 ft (332.8 m)
Max Span197.8 ft (60.3 m)
Deck Width44.0 ft (13.4 m)
Deck Area4459.5 sq m
Main Spans6
Year Built1984

Traffic

Avg Daily Traffic3,719 (2023)
Truck Traffic27%
Lanes On Bridge2

Inspection & Ownership

Last Inspection623
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure NumberI00090042+09192

Nearby Bridges

I 90 over Clark Fork River 0.0 mi Fair I 90 over Int Dry Creek 0.5 mi Fair I 90 over Int Dry Creek 0.5 mi Fair Southside RD over Dry Creek 002 0.6 mi Good Southside Crossing over Clark Fork 015 0.6 mi Fair I 90 over Clark Fork River 1.5 mi Fair I 90 over Clark Fork River 1.5 mi Fair I 90 WB over Sep Southside Road 2.6 mi Fair I 90 EB over Sep Southside Road 2.7 mi Fair I 90 EB over Clark Fork Rvr-local RD 2.8 mi Fair