Structure 7368 · Monroe County, MI

Day Road over Saline River

Carries Day Road over Saline River, 0.5 Mi E Of Bunce Road.

Overall conditionPoor

Set by its lowest-rated component: Superstructure at 1 of 9.

How ratings work
Deck3/9 · Serious
Superstructuresets the rating1/9 · Imminent Failure
Substructure4/9 · Poor
Channelnot part of overall3/9 · Serious
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT60 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 3/9Superstructure 1/9 · sets the ratingSubstructure 4/9

60 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 girder bridge.

Built193789 years old
Length60.0 ft18.3 m
Daily traffic16counted 1981
Last inspectedAugust 2023every 24 months

Location

StateMichigan
CountyMonroe
Location0.5 Mi E Of Bunce Road
CarriesDay Road
CrossesSaline River
Coordinates41.99790, -83.62423

Physical Characteristics

MaterialSteel
DesignGirder and Floorbeam
Total Length60.0 ft (18.3 m)
Max Span57.1 ft (17.4 m)
Deck Width22.6 ft (6.9 m)
Deck Area126.3 sq m
Main Spans1
Year Built1937

Traffic

Avg Daily Traffic16 (1981)
Truck Traffic20%
Lanes On Bridge2

Inspection & Ownership

Last InspectionAugust 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure Number000000000007368

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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