Structure 4833 · Kent County, MI

I-196 EB M-21 over Service RD

Carries I-196 EB M-21 over Service RD, NE Limits Of Grandville.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure and Substructure at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT32 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

32 ft end to end. Lengths and the car on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a slab bridge.

Built196561 years old
Length32.2 ft9.8 m
Daily traffic47,200counted 2015
Last inspectedJune 2024every 24 months

Location

StateMichigan
CountyKent
LocationNE Limits Of Grandville
CarriesI-196 EB M-21
CrossesService RD
Coordinates42.92734, -85.74424

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length32.2 ft (9.8 m)
Max Span31.8 ft (9.7 m)
Deck Width43.0 ft (13.1 m)
Deck Area128.4 sq m
Main Spans1
Year Built1965

Traffic

Avg Daily Traffic47,200 (2015)
Truck Traffic8%
Lanes On Bridge2
Lanes Under Bridge1

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000004833

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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