IRR - I 90 over Little Bighorn River

Fair Condition50 years old2,693 vehicles/day

Location

StateMontana
CountyBig Horn
Location2.5m S Crow Agency
CarriesIRR - I 90
CrossesLittle Bighorn River
Coordinates45.56838, -107.45202

Condition Ratings

Overall ConditionFair
Deck6 (Satisfactory)
Superstructure6 (Satisfactory)
Substructure5 (Fair)
Channel/Waterway7 (Good)
Scour Critical8 — Stable, low risk

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length161.4 ft (49.2 m)
Max Span81.0 ft (24.7 m)
Deck Width44.3 ft (13.5 m)
Deck Area664.2 sq m
Main Spans2
Year Built1976

Traffic

Avg Daily Traffic2,693 (2023)
Truck Traffic18%
Lanes On Bridge2

Inspection & Ownership

Last Inspection723
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure NumberI00090511+06052

Nearby Bridges

IRR - I 90 over Little Bighorn River 0.0 mi Fair IRR - Frontage 325 over Little Bighorn River 075 0.0 mi Fair IRR - Frontage 315 over Little Bighorn River 002 0.0 mi Fair IRR - US 212 over Int Custer Batlfld I 90 0.7 mi Fair IRR BIA RTE 14 over Big Shoulder Creek 1.5 mi Fair IRR - I 90 over Little Bighorn River 2.0 mi Fair IRR - I 90 over Little Bighorn River 2.0 mi Fair Bala ST over Little Bighorn River 069 2.0 mi Fair Battlefield Road over Deep Coulee 2.2 mi Fair IRR - I 90 over Int Crow Agency 2.3 mi Fair