I 90 over St. Regis Rvr-local RD

Fair Condition47 years old7,448 vehicles/day

Location

StateMontana
CountyMineral
Location4.3m E De Borgia
CarriesI 90
CrossesSt. Regis Rvr-local RD
Coordinates47.34437, -115.28024

Condition Ratings

Overall ConditionFair
Deck6 (Satisfactory)
Superstructure6 (Satisfactory)
Substructure6 (Satisfactory)
Channel/Waterway8 (Very Good)
Scour Critical8 — Stable, low risk

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length455.1 ft (138.7 m)
Max Span174.9 ft (53.3 m)
Deck Width88.3 ft (26.9 m)
Deck Area3731.0 sq m
Main Spans3
Year Built1979

Traffic

Avg Daily Traffic7,448 (2023)
Truck Traffic26%
Lanes On Bridge4
Lanes Under Bridge1

Inspection & Ownership

Last Inspection723
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure NumberI00090023+00631

Nearby Bridges

I 90 over St. Regis Rvr-local RD 0.3 mi Fair No Data Entered over Henderson Creek 0.9 mi Poor Mullan Gulch RD over Rock Creek 013 0.9 mi Fair I 90 over Int Henderson 0.9 mi Fair I 90 EB over St. Regis River 1.3 mi Fair I 90 EB over St. Regis River 1.4 mi Fair RD 18720 over Ward Creek 1.6 mi Good Mullan Gulch RD over Twelvemile Creek 014 1.7 mi Fair 300-1 over ST Regis River 1.7 mi Fair RD 9117 over Twelvemile Creek 2.1 mi Fair