I 90 over Abandoned Railroad

Fair Condition62 years old6,216 vehicles/day

Location

StateMontana
CountyMissoula
Location0.6m E Bonner
CarriesI 90
CrossesAbandoned Railroad
Coordinates46.86566, -113.87408

Condition Ratings

Overall ConditionFair
Deck6 (Satisfactory)
Superstructure7 (Good)
Substructure7 (Good)
Scour CriticalNot applicable

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length152.9 ft (46.6 m)
Max Span51.8 ft (15.8 m)
Deck Width40.0 ft (12.2 m)
Deck Area568.5 sq m
Main Spans3
Year Built1964 (reconstructed 1999)

Traffic

Avg Daily Traffic6,216 (2023)
Truck Traffic19%
Lanes On Bridge2

Inspection & Ownership

Last Inspection624
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure NumberI00090110+09391

Nearby Bridges