I 90 over Clark Fork River

Fair Condition61 years old10,294 vehicles/day

Location

StateMontana
CountyMissoula
Location1.9m W Bonner
CarriesI 90
CrossesClark Fork River
Coordinates46.87205, -113.93148

Condition Ratings

Overall ConditionFair
Deck7 (Good)
Superstructure5 (Fair)
Substructure6 (Satisfactory)
Channel/Waterway7 (Good)
Scour Critical8 — Stable, low risk

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length455.1 ft (138.7 m)
Max Span136.2 ft (41.5 m)
Deck Width31.8 ft (9.7 m)
Deck Area1345.4 sq m
Main Spans3
Year Built1965

Traffic

Avg Daily Traffic10,294 (2023)
Truck Traffic11%
Lanes On Bridge2

Inspection & Ownership

Last Inspection424
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure NumberI00090108+02762

Nearby Bridges

I 90 over Clark Fork River 0.0 mi Fair Deer Creek RD over Clark Fork River 11 0.6 mi Good I 90 over Deer Creek Road 0.9 mi Good I 90 over Deer Creek Road 1.0 mi Fair I 90 over Int E Missoula 1.0 mi Fair I 90 over Int E Missoula 1.0 mi Fair I 90 over Sep Juniper Dr-clark Fk 1.1 mi Fair I 90 over Sep Juniper Dr-clark Fk 1.1 mi Fair S 200 over Int Bonner I 90 1.8 mi Fair I 90 over Rr 2.0 mi Fair