I 90 over Sep Garrison Frontage RD

Fair Condition53 years old5,136 vehicles/day

Location

StateMontana
CountyPowell
Location2.5m W Garrison
CarriesI 90
CrossesSep Garrison Frontage RD
Coordinates46.54230, -112.84696

Condition Ratings

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

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length78.1 ft (23.8 m)
Max Span29.9 ft (9.1 m)
Deck Width44.0 ft (13.4 m)
Deck Area318.9 sq m
Main Spans3
Year Built1973

Traffic

Avg Daily Traffic5,136 (2023)
Truck Traffic22%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last Inspection824
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure NumberI00090171+07791

Nearby Bridges

I 90 over Sep Garrison Frontage RD 0.0 mi Fair I 90 over Int Phosphate 1.5 mi Fair I 90 over Int Phosphate 1.5 mi Fair I 90 over Rr 1.7 mi Poor I 90 EB over Rr 1.7 mi Poor Sawmill RD over Rock Creek 047 2.0 mi Good I 90 over Int W Garrison-rr 2.2 mi Poor I 90 over Int W Garrisison-rr 2.3 mi Fair Sawmill RD over Clark Fork River 026 2.4 mi Fair US 12 over Rr 2.6 mi Fair