Us-31 NB over Black River

Fair Condition77 years old23,373 vehicles/day

Location

StateMichigan
CountyOttawa
Location0.4 Mi N Of M-21
CarriesUs-31 NB
CrossesBlack River
Coordinates42.80089, -86.08331

Condition Ratings

Overall ConditionFair
Deck7 (Good)
Superstructure6 (Satisfactory)
Substructure5 (Fair)
Channel/Waterway5 (Fair)
Scour Critical3 — Scour critical

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length240.2 ft (73.2 m)
Max Span100.1 ft (30.5 m)
Deck Width48.6 ft (14.8 m)
Deck Area1083.4 sq m
Main Spans3
Year Built1949 (reconstructed 1984)

Traffic

Avg Daily Traffic23,373 (2020)
Truck Traffic7%
Lanes On Bridge2

Inspection & Ownership

Last Inspection524
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure Number000000000008689

Nearby Bridges