I 90 over Manhattan South RD

Fair Condition62 years old9,726 vehicles/day

Location

StateMontana
CountyGallatin
Location0.6m E Manhattan
CarriesI 90
CrossesManhattan South RD
Coordinates45.84813, -111.32630

Condition Ratings

Overall ConditionFair
Deck7 (Good)
Superstructure7 (Good)
Substructure6 (Satisfactory)
Scour CriticalNot applicable

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length163.1 ft (49.7 m)
Max Span55.1 ft (16.8 m)
Deck Width41.0 ft (12.5 m)
Deck Area621.2 sq m
Main Spans3
Year Built1964

Traffic

Avg Daily Traffic9,726 (2023)
Truck Traffic12%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionDecember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure NumberI00090289+02722

Nearby Bridges

I 90 over Manhattan South RD 0.0 mi Fair Manhattan S RD over Irrigation Canal 117 0.2 mi Fair Frontage Rd-s 205 over Rr 0.6 mi Fair Churchill RD over Int Manhattan-i 90 0.6 mi Fair I 90 over Camp Creek 1.4 mi Good I 90 over Camp Creek 1.4 mi Good Frontage Rd-s 205 over Camp Creek 1.4 mi Fair W Dry Creek RD over Baker Creek 1.6 mi Poor I 90 over Baker Creek 1.6 mi Good Frontage Rd-s 205 over Baker Creek 1.6 mi Fair