I 90 over St. Regis River

Fair Condition45 years old4,056 vehicles/day

Location

StateMontana
CountyMineral
Location4.3m W St. Regis
CarriesI 90
CrossesSt. Regis River
Coordinates47.30102, -115.18213

Condition Ratings

Overall ConditionFair
Deck6 (Satisfactory)
Superstructure5 (Fair)
Substructure6 (Satisfactory)
Channel/Waterway6 (Satisfactory)
Scour Critical5 — Stable for scour

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length402.2 ft (122.6 m)
Max Span102.0 ft (31.1 m)
Deck Width44.3 ft (13.5 m)
Deck Area1655.1 sq m
Main Spans4
Year Built1981 (reconstructed 2010)

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 NumberI00090029+02051

Nearby Bridges

I 90 over St. Regis River 0.0 mi Fair I 90 over St. Regis River 0.2 mi Fair I 90 over St. Regis River 0.2 mi Fair RD 431 over Twomile Creek 0.6 mi Fair RD 431 over ST Regis River 0.7 mi Fair I 90 over Int Two Mile-st Regis R 0.9 mi Fair I 90 over Int Two Mile-st Regis R 0.9 mi Fair I 90 over St. Regis Rvr-int Ramp 0.9 mi Fair I 90 over St. Regis River 1.3 mi Good I 90 EB over St. Regis River 2.1 mi Fair