I 90 over St. Regis River

Good Condition45 years old4,056 vehicles/day

Location

StateMontana
CountyMineral
Location3.1m W St. Regis
CarriesI 90
CrossesSt. Regis River
Coordinates47.29433, -115.15725

Condition Ratings

Overall ConditionGood
Deck7 (Good)
Superstructure7 (Good)
Substructure7 (Good)
Channel/Waterway7 (Good)
Scour Critical5 — Stable for scour

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length376.0 ft (114.6 m)
Max Span101.0 ft (30.8 m)
Deck Width43.0 ft (13.1 m)
Deck Area1501.3 sq m
Main Spans4
Year Built1981

Traffic

Avg Daily Traffic4,056 (2023)
Truck Traffic24%
Lanes On Bridge2

Inspection & Ownership

Last Inspection723
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure NumberI00090030+05492

Nearby Bridges

I 90 over St. Regis Rvr-int Ramp 0.3 mi Fair I 90 over Int Two Mile-st Regis R 0.3 mi Fair I 90 over Int Two Mile-st Regis R 0.4 mi Fair RD 431 over ST Regis River 0.6 mi Fair RD 431 over Twomile Creek 0.8 mi Fair I 90 EB over St. Regis River 0.9 mi Fair I 90 over St. Regis River 1.1 mi Fair I 90 over St. Regis River 1.1 mi Fair I 90 over St. Regis River 1.2 mi Fair I 90 over St. Regis River 1.3 mi Fair