I 15 over Sep High Brdge RD

Fair Condition38 years old2,185 vehicles/day

Location

StateMontana
CountyBeaverhead
Location6.2m N Clark Canyon Dam
CarriesI 15
CrossesSep High Brdge RD
Coordinates45.08325, -112.79047

Condition Ratings

Overall ConditionFair
Deck6 (Satisfactory)
Superstructure6 (Satisfactory)
Substructure6 (Satisfactory)
Scour CriticalNot applicable

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length79.1 ft (24.1 m)
Max Span29.9 ft (9.1 m)
Deck Width40.4 ft (12.3 m)
Deck Area296.4 sq m
Main Spans3
Year Built1988

Traffic

Avg Daily Traffic2,185 (2023)
Truck Traffic25%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last Inspection524
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure NumberI00015051+00472

Nearby Bridges

I 15 over Sep High Bridge RD 0.0 mi Fair I 15 over Int Grasshopper Creek 1.2 mi Fair I 15 over Int Grasshopper Creek 1.2 mi Fair I 15 Frontage RD over Beaverhead R-int Ramp 1.2 mi Fair High Bridge RD over Beaverhead River 125 1.3 mi Fair I 15 over Beaverhead River 1.3 mi Fair I 15 over Beaverhead River 1.3 mi Good I 15 over Beaverhead River 1.3 mi Fair I 15 over Beaverhead River 1.3 mi Fair I 15 over Beaverhead River 1.6 mi Fair