I 15 over Beaverhead River

Fair Condition62 years old2,185 vehicles/day

Location

StateMontana
CountyBeaverhead
Location5m N Clark Canyon Dam
CarriesI 15
CrossesBeaverhead River
Coordinates45.06590, -112.80144

Condition Ratings

Overall ConditionFair
Deck6 (Satisfactory)
Superstructure6 (Satisfactory)
Substructure6 (Satisfactory)
Scour Critical5 — Stable for scour

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length163.1 ft (49.7 m)
Max Span61.4 ft (18.7 m)
Deck Width46.9 ft (14.3 m)
Deck Area710.7 sq m
Main Spans3
Year Built1964

Traffic

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

Inspection & Ownership

Last Inspection125
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure NumberI00015049+07601

Nearby Bridges

High Bridge RD over Beaverhead River 125 0.0 mi Fair I 15 over Beaverhead River 0.0 mi Good I 15 over Sep High Bridge RD 1.0 mi Fair I 15 over Sep High Bridge RD 1.0 mi Fair Hennaberry RD over Beaverhead River 125 1.0 mi Good I 15 over Sep High Bridge RD 1.3 mi Fair I 15 over Sep High Brdge RD 1.3 mi Fair I 15 over Int Grasshopper Creek 2.5 mi Fair I 15 over Int Grasshopper Creek 2.5 mi Fair I 15 Frontage RD over Beaverhead R-int Ramp 2.5 mi Fair