I 90 over Int W Garrisison-rr

Fair Condition47 years old5,232 vehicles/day

Location

StateMontana
CountyPowell
LocationGarrison
CarriesI 90
CrossesInt W Garrisison-rr
Coordinates46.52258, -112.80911

Condition Ratings

Overall ConditionFair
Deck6 (Satisfactory)
Superstructure6 (Satisfactory)
Substructure5 (Fair)
Scour CriticalNot applicable

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length709.6 ft (216.3 m)
Max Span107.0 ft (32.6 m)
Deck Width44.6 ft (13.6 m)
Deck Area2941.7 sq m
Main Spans7
Year Built1979

Traffic

Avg Daily Traffic5,232 (2023)
Truck Traffic20%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last Inspection723
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure NumberI00090174+03632

Nearby Bridges

I 90 over Int W Garrison-rr 0.0 mi Poor Sawmill RD over Clark Fork River 026 0.2 mi Fair US 12 over Rr 0.5 mi Fair Sawmill RD over Rock Creek 047 0.5 mi Good US 12 over Little Blackfoot River 0.8 mi Fair I 90 over Little Blackfoot River 0.8 mi Fair I 90 over Little Blackfoot River 0.8 mi Good I 90 over Int E Garrison-rr 1.1 mi Fair I 90 over Int E Garrison-rr 1.1 mi Fair I 90 over Sep Garrison Frontage RD 2.3 mi Fair