Structure 8746 · Ottawa County, MI

I-196 WB over I-196BL (byron Rd)

Carries I-196 WB over I-196BL (byron Rd), E Limits Of Zeeland.

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
SEMI-TRUCK · 72 FT171 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

171 ft end to end, longest span 91 ft: about 2 semi-trucks nose to tail. Lengths and the semi-truck 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 multi-beam bridge.

Built197254 years old
Length170.9 ft52.1 m
Daily traffic12,652counted 2007
Last inspectedMay 2024every 24 months

Location

StateMichigan
CountyOttawa
LocationE Limits Of Zeeland
CarriesI-196 WB
CrossesI-196BL (byron Rd)
Coordinates42.81224, -85.98143

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length170.9 ft (52.1 m)
Max Span90.9 ft (27.7 m)
Deck Width43.6 ft (13.3 m)
Deck Area692.9 sq m
Main Spans2
Year Built1972

Traffic

Avg Daily Traffic12,652 (2007)
Truck Traffic17%
Lanes On Bridge2
Lanes Under Bridge5

Inspection & Ownership

Last InspectionMay 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000008746

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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