IRR BIA RTE 6 over Little Bighorn River

Good Condition27 years old1,000 vehicles/day

Location

StateMontana
CountyBig Horn
LocationAt Crow Agency
CarriesIRR BIA RTE 6
CrossesLittle Bighorn River
Coordinates45.60297, -107.45369

Condition Ratings

Overall ConditionGood
Deck7 (Good)
Superstructure8 (Very Good)
Substructure7 (Good)
Channel/Waterway5 (Fair)
Scour Critical8 — Stable, low risk

Physical Characteristics

MaterialPrestressed Concrete
DesignTee Beam
Total Length122.0 ft (37.2 m)
Max Span118.1 ft (36 m)
Deck Width39.0 ft (11.9 m)
Deck Area442.7 sq m
Main Spans1
Year Built1999

Traffic

Avg Daily Traffic1,000 (2024)
Truck Traffic10%
Lanes On Bridge2

Inspection & Ownership

Last Inspection624
Inspection FrequencyEvery 24 months
OwnerBureau of Indian Affairs
Historical SignificanceBridge is not eligible for the National Register
Structure Number00000000000C226

Nearby Bridges

IRR - I 90 over Int Crow Agency 0.4 mi Fair IRR - I 90 over Int Crow Agency 0.5 mi Fair Bala ST over Little Bighorn River 069 0.5 mi Fair IRR - I 90 over Little Bighorn River 0.6 mi Fair IRR - I 90 over Little Bighorn River 0.6 mi Fair IRR - US 212 over Int Custer Batlfld I 90 1.7 mi Fair IRR - Frontage 325 over Little Bighorn River 075 2.4 mi Fair IRR - I 90 over Little Bighorn River 2.4 mi Fair IRR - I 90 over Little Bighorn River 2.4 mi Fair IRR - Frontage 315 over Little Bighorn River 002 2.4 mi Fair