I 90 over St. Regis River

Fair Condition43 years old3,559 vehicles/day

Location

StateMontana
CountyMineral
LocationSt. Regis
CarriesI 90
CrossesSt. Regis River
Coordinates47.29557, -115.09801

Condition Ratings

Overall ConditionFair
Deck7 (Good)
Superstructure7 (Good)
Substructure6 (Satisfactory)
Channel/Waterway8 (Very Good)
Scour Critical5 — Stable for scour

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length246.1 ft (75 m)
Max Span82.0 ft (25 m)
Deck Width44.0 ft (13.4 m)
Deck Area1,005 sq m
Main Spans3
Year Built1983

Traffic

Avg Daily Traffic3,559 (2023)
Truck Traffic28%
Lanes On Bridge2

Inspection & Ownership

Last Inspection125
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure NumberI00090033+05282

Nearby Bridges

I 90 EB over St. Regis River 0.0 mi Fair I 90 over St. Regis Rvr-int Ramp 0.0 mi Fair I 90 over St. Regis Rvr-int Ramp 0.0 mi Fair Old HWY 10 E over ST Regis River 059 0.1 mi Poor I 90 over Int St. Regis 0.1 mi Fair I 90 over Int St. Regis 0.1 mi Fair Old HWY 10 E over Clark Fk-rr 060 0.4 mi Fair I 90 over Clark Fork Rvr-rr-local 0.4 mi Fair I 90 over Drainage 0.4 mi Good I 90 over Clark Fork Rvr-rr-local 0.4 mi Fair