M-231 over Sleeper Street

Good Condition12 years old3,500 vehicles/day

Location

StateMichigan
CountyOttawa
Location3.5 Mi N Of M-45
CarriesM-231
CrossesSleeper Street
Coordinates43.02322, -86.09167

Condition Ratings

Overall ConditionGood
Deck7 (Good)
Superstructure8 (Very Good)
Substructure8 (Very Good)
Scour CriticalNot applicable

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length143.0 ft (43.6 m)
Max Span139.8 ft (42.6 m)
Deck Width49.5 ft (15.1 m)
Deck Area658.4 sq m
Main Spans1
Year Built2014

Traffic

Avg Daily Traffic3,500
Truck Traffic8%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure Number000000000013456

Nearby Bridges