I 90 over Fly Creek

Good Condition54 years old3,736 vehicles/day

Location

StateMontana
CountyBig Horn
Location16.8m W Hardin
CarriesI 90
CrossesFly Creek
Coordinates45.77588, -107.94406

Condition Ratings

Overall ConditionGood
Deck7 (Good)
Superstructure7 (Good)
Substructure7 (Good)
Channel/Waterway6 (Satisfactory)
Scour Critical5 — Stable for scour

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length114.2 ft (34.8 m)
Max Span55.8 ft (17 m)
Deck Width44.3 ft (13.5 m)
Deck Area469.8 sq m
Main Spans2
Year Built1972

Traffic

Avg Daily Traffic3,736 (2023)
Truck Traffic23%
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure NumberI00090479+03981

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