I 90 over St. Regis Rvr-int Ramp

Fair Condition45 years old22 vehicles/day

Location

StateMontana
CountyMineral
Location3.7m W St. Regis
CarriesI 90
CrossesSt. Regis Rvr-int Ramp
Coordinates47.29591, -115.16380

Condition Ratings

Overall ConditionFair
Deck6 (Satisfactory)
Superstructure7 (Good)
Substructure7 (Good)
Channel/Waterway5 (Fair)
Scour Critical5 — Stable for scour

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length151.6 ft (46.2 m)
Max Span76.1 ft (23.2 m)
Deck Width31.2 ft (9.5 m)
Deck Area438.9 sq m
Main Spans2
Year Built1981

Traffic

Avg Daily Traffic22 (2023)
Truck Traffic3%
Lanes On Bridge1

Inspection & Ownership

Last Inspection923
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure NumberI00090030+02024

Nearby Bridges

I 90 over Int Two Mile-st Regis R 0.0 mi Fair I 90 over Int Two Mile-st Regis R 0.1 mi Fair RD 431 over ST Regis River 0.3 mi Fair I 90 over St. Regis River 0.3 mi Good RD 431 over Twomile Creek 0.5 mi Fair I 90 over St. Regis River 0.7 mi Fair I 90 over St. Regis River 0.7 mi Fair I 90 over St. Regis River 0.9 mi Fair I 90 over St. Regis River 0.9 mi Fair I 90 EB over St. Regis River 1.2 mi Fair