IRR BIA RTE 30 over Main Canal

Fair Condition43 years old225 vehicles/day

Location

StateMontana
CountyValley
Location7.2 Km SW Of Oswego
CarriesIRR BIA RTE 30
CrossesMain Canal
Coordinates48.04111, -105.95206

Condition Ratings

Overall ConditionFair
Deck6 (Satisfactory)
Superstructure8 (Very Good)
Substructure5 (Fair)
Channel/Waterway4 (Poor)
Scour Critical4 — Foundations need monitoring

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length42.3 ft (12.9 m)
Max Span40.0 ft (12.2 m)
Deck Width34.1 ft (10.4 m)
Deck Area134.2 sq m
Main Spans1
Year Built1983

Traffic

Avg Daily Traffic225 (2024)
Truck Traffic10%
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerBureau of Indian Affairs
Historical SignificanceBridge is not eligible for the National Register
Structure Number00000000000C616

Nearby Bridges

IRR BIA Route 1 over Main Canal 0.6 mi Good IRR BIA RTE 30 over Main Canal 1.1 mi Fair IRR BIA RTE 30 over Main Canal 2.0 mi Good IRR BIA Route 1 over Main Canal 3.1 mi Fair IRR - US 2 over Indian Service Canal 3.5 mi Fair IRR - US 2 over Oswego Creek 3.8 mi Fair IRR BIA RTE 10 over Oswego East Main Canal 4.1 mi Fair Berge RD over Little Porcupine CR 015 4.5 mi Fair Hentges RD over Little Porcupine CR 064 4.5 mi Poor IRR - US 2 over Little Porcupine Creek 4.5 mi Fair