Structure 13762 · Midland County, MI

M-30 over Pere Marq Rail Trail

Carries M-30 over Pere Marq Rail Trail, 0.1 Mi S Of Saginaw RD.

Overall conditionGood

Set by its lowest-rated component: Culvert at 8 of 9.

How ratings work
Culvertsets the rating8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
23 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 8/9

A culvert 23 ft across. Lengths are drawn to scale; at this length a semi-truck would be a speck. 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.

Built200818 years old
Length22.6 ft6.9 m
Daily traffic4,200counted 2006
Last inspectedApril 2024every 24 months

Location

StateMichigan
CountyMidland
Location0.1 Mi S Of Saginaw RD
CarriesM-30
CrossesPere Marq Rail Trail
Coordinates43.66578, -84.36859

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length22.6 ft (6.9 m)
Max Span20.0 ft (6.1 m)
Deck Area80.0 sq m
Main Spans1
Year Built2008

Traffic

Avg Daily Traffic4,200 (2006)
Truck Traffic6%
Lanes On Bridge2

Inspection & Ownership

Last InspectionApril 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000013762

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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