IRR - Frontage 315 over Little Bighorn River 002

Fair Condition50 years old100 vehicles/day

Location

StateMontana
CountyBig Horn
Location2m S Crow Agency
CarriesIRR - Frontage 315
CrossesLittle Bighorn River 002
Coordinates45.56822, -107.45261

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 Length163.1 ft (49.7 m)
Max Span80.7 ft (24.6 m)
Deck Width30.2 ft (9.2 m)
Deck Area457.2 sq m
Main Spans2
Year Built1976

Traffic

Avg Daily Traffic100 (2025)
Truck Traffic3%
Lanes On Bridge2

Inspection & Ownership

Last Inspection623
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure NumberL02315003+02001

Nearby Bridges

IRR - I 90 over Little Bighorn River 0.0 mi Fair IRR - I 90 over Little Bighorn River 0.0 mi Fair IRR - Frontage 325 over Little Bighorn River 075 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