Structure 5030 · Kent County, MI

10 Mile Road over Rogue R & White Pine Trl

Carries 10 Mile Road over Rogue R & White Pine Trl, 400 Ft W Of Main Street.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT306 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 6/9 · sets the ratingSubstructure 7/9

306 ft end to end, longest span 77 ft: about 4 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 box-beam bridge.

Built197749 years old
Length305.8 ft93.2 m
Daily traffic16,978counted 2018
Last inspectedOctober 2024every 24 months

Location

StateMichigan
CountyKent
Location400 Ft W Of Main Street
Carries10 Mile Road
CrossesRogue R & White Pine Trl
Coordinates43.11740, -85.56167

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length305.8 ft (93.2 m)
Max Span76.8 ft (23.4 m)
Deck Width63.6 ft (19.4 m)
Deck Area1808.1 sq m
Main Spans4
Year Built1977

Traffic

Avg Daily Traffic16,978 (2018)
Truck Traffic3%
Lanes On Bridge4

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure Number000000000005030

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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