I 90 over Clark Fork River

Poor Condition56 years old13,081 vehicles/day

Location

StateMontana
CountyGranite
Location5m W Drummond
CarriesI 90
CrossesClark Fork River
Coordinates46.70133, -113.24195

Condition Ratings

Overall ConditionPoor
Deck4 (Poor)
Superstructure7 (Good)
Substructure7 (Good)
Channel/Waterway7 (Good)
Scour Critical8 — Stable, low risk

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length254.6 ft (77.6 m)
Max Span86.9 ft (26.5 m)
Deck Width78.1 ft (23.8 m)
Deck Area1846.9 sq m
Main Spans4
Year Built1970

Traffic

Avg Daily Traffic13,081 (2023)
Truck Traffic18%
Lanes On Bridge4

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure NumberI00090148+04361

Nearby Bridges

I 90 over Rattler Gulch 0.8 mi Fair I 90 over Sep Bearmouth Road 4.3 mi Good Bear Gulch RD over Clark Fork River 002 4.3 mi Poor I 90 over Int W Drummond 4.6 mi Fair I 90 over Int W Drummond 4.6 mi Fair I 90 over Drainage 4.7 mi Good S 1 over Rr 4.7 mi Fair I 90 over Antelope Creek 4.8 mi Poor S 1 over Abandoned Railroad 4.8 mi Fair S 1 over Clark Fork 4.9 mi Poor