Structure 7089 · Monroe County, MI

Us-23 NB over Ten Mile Creek

Carries Us-23 NB over Ten Mile Creek, 0.5 Mi N Ohio State Line.

Overall conditionFair

Set by its lowest-rated component: Superstructure and Substructure at 5 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating5/9 · Fair
Substructuresets the rating5/9 · Fair
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT53 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 5/9 · sets the ratingSubstructure 5/9 · sets the rating

53 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 multi-beam bridge.

Built195967 years old
Length52.8 ft16.1 m
Daily traffic19,270counted 2007
Last inspectedApril 2023every 24 months

Location

StateMichigan
CountyMonroe
Location0.5 Mi N Ohio State Line
CarriesUs-23 NB
CrossesTen Mile Creek
Coordinates41.73142, -83.68921

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length52.8 ft (16.1 m)
Max Span52.8 ft (16.1 m)
Deck Width47.2 ft (14.4 m)
Deck Area231.8 sq m
Main Spans1
Year Built1959

Traffic

Avg Daily Traffic19,270 (2007)
Truck Traffic16%
Lanes On Bridge2

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000000007089

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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