I 15 over Missouri River-local

Fair Condition55 years old2,201 vehicles/day

Location

StateMontana
CountyCascade
Location7m N Craig
CarriesI 15
CrossesMissouri River-local
Coordinates47.13881, -111.86128

Condition Ratings

Overall ConditionFair
Deck6 (Satisfactory)
Superstructure6 (Satisfactory)
Substructure7 (Good)
Channel/Waterway8 (Very Good)
Scour Critical5 — Stable for scour

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length818.9 ft (249.6 m)
Max Span143.0 ft (43.6 m)
Deck Width40.7 ft (12.4 m)
Deck Area3095.0 sq m
Main Spans5
Year Built1971

Traffic

Avg Daily Traffic2,201 (2023)
Truck Traffic16%
Lanes On Bridge2
Lanes Under Bridge8

Inspection & Ownership

Last Inspection524
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure NumberI00015241+08672

Nearby Bridges