Structure 7122 · Monroe County, MI

Us-24 over Otter Creek

Carries Us-24 over Otter Creek, 4.1 Mi SW Of M-50.

Overall conditionPoor

Set by its lowest-rated component: Superstructure at 4 of 9.

How ratings work
Superstructuresets the rating4/9 · Poor
Substructure5/9 · Fair
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT65 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck not ratedSuperstructure 4/9 · sets the ratingSubstructure 5/9

65 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 deck arch.

Built1924102 years old
Length65.0 ft19.8 m
Daily traffic7,446counted 2007
Last inspectedAugust 2024every 12 months

Location

StateMichigan
CountyMonroe
Location4.1 Mi SW Of M-50
CarriesUs-24
CrossesOtter Creek
Coordinates41.86945, -83.45654

Physical Characteristics

MaterialConcrete
DesignArch - Deck
Total Length65.0 ft (19.8 m)
Max Span65.0 ft (19.8 m)
Deck Width48.6 ft (14.8 m)
Deck Area293.0 sq m
Main Spans1
Year Built1924

Traffic

Avg Daily Traffic7,446 (2007)
Truck Traffic8%
Lanes On Bridge2

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 12 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000000007122

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.

Nearby Bridges