I 90 over Rattlesnake Cr-int Ramp

Fair Condition60 years old2,799 vehicles/day

Location

StateMontana
CountyMissoula
LocationMissoula
CarriesI 90
CrossesRattlesnake Cr-int Ramp
Coordinates46.87239, -113.98433

Condition Ratings

Overall ConditionFair
Deck6 (Satisfactory)
Superstructure6 (Satisfactory)
Substructure5 (Fair)
Channel/Waterway8 (Very Good)
Scour Critical8 — Stable, low risk

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length224.7 ft (68.5 m)
Max Span86.6 ft (26.4 m)
Deck Width25.9 ft (7.9 m)
Deck Area541.1 sq m
Main Spans4
Year Built1966

Traffic

Avg Daily Traffic2,799 (2023)
Truck Traffic3%
Lanes On Bridge1
Lanes Under Bridge2

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure NumberI00090105+04673

Nearby Bridges

I 90 over Greenough Dr-rattlesnake 0.0 mi Fair I 90 over Greenough Dr-rattlesnake 0.0 mi Fair Vine ST over Rattlesnake Creek 002 0.0 mi Good I 90 WB over Int Van Buren Street 0.2 mi Fair I 90 EB over Int Van Buren Street 0.2 mi Good US 12-e Broadway S over Rattlesnake Creek 0.2 mi Fair E Front ST over Rattlesnake Creek 0.3 mi Fair Madison St-us 12 over Clark Fork River 0.4 mi Fair S Higgins AVE over Clark Fork R-ped Paths 0.6 mi Fair I 90 over Int Orange Street 0.7 mi Good