Structure 6251 · Macomb County, MI

Schoenherr RD over Sterling Relief Drain

Carries Schoenherr RD over Sterling Relief Drain, 0.5 Mi S Of 16 Mile RD.

Overall conditionFair

Set by its lowest-rated component: Culvert at 6 of 9.

How ratings work
Culvertsets the rating6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT64 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 6/9

A culvert 64 ft across with 4 openings. 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, so those are drawn as typical for a culvert.

Built197155 years old
Length64.0 ft19.5 m
Daily traffic29,860counted 2012
Last inspectedApril 2023every 24 months

Location

StateMichigan
CountyMacomb
Location0.5 Mi S Of 16 Mile RD
CarriesSchoenherr RD
CrossesSterling Relief Drain
Coordinates42.56015, -82.98775

Physical Characteristics

MaterialSteel
DesignCulvert
Total Length64.0 ft (19.5 m)
Max Span12.8 ft (3.9 m)
Deck Area351 sq m
Main Spans4
Year Built1971

Traffic

Avg Daily Traffic29,860 (2012)
Truck Traffic5%
Lanes On Bridge5

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000000006251

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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