Structure 7157 · Monroe County, MI

I-75 SB over Halfway Creek

Carries I-75 SB over Halfway Creek, 0.3 Mi N Ohio State Line.

Overall conditionGood

Set by its lowest-rated component: Substructure at 7 of 9.

How ratings work
Deck8/9 · Very Good
Superstructure9/9 · Excellent
Substructuresets the rating7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT200 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 9/9Substructure 7/9 · sets the rating

200 ft end to end, longest span 99 ft: about 3 semi-trucks nose to tail. Lengths and the semi-truck 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.

Built20206 years old
Length200.1 ft61 m
Daily traffic27,900counted 2017
Last inspectedJune 2023every 24 months

Location

StateMichigan
CountyMonroe
Location0.3 Mi N Ohio State Line
CarriesI-75 SB
CrossesHalfway Creek
Coordinates41.73737, -83.48752

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length200.1 ft (61 m)
Max Span98.8 ft (30.1 m)
Deck Width63.6 ft (19.4 m)
Deck Area1183.4 sq m
Main Spans2
Year Built2020

Traffic

Avg Daily Traffic27,900 (2017)
Truck Traffic29%
Lanes On Bridge3

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number000000000007157

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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