Structure 2503 · Genesee County, MI

I-75 SB over Flushing RD

Carries I-75 SB over Flushing RD, N Of Flint River.

Overall conditionFair

Set by its lowest-rated component: Deck at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructure6/9 · Satisfactory
Substructure6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT184 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 6/9Substructure 6/9

184 ft end to end, longest span 74 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 tee-beam bridge.

Built1958rebuilt 1973
Length184.1 ft56.1 m
Daily traffic76,600counted 2013
Last inspectedSeptember 2024every 24 months

Location

StateMichigan
CountyGenesee
LocationN Of Flint River
CarriesI-75 SB
CrossesFlushing RD
Coordinates43.03247, -83.75432

Physical Characteristics

MaterialConcrete Continuous
DesignTee Beam
Total Length184.1 ft (56.1 m)
Max Span74.1 ft (22.6 m)
Deck Width61.7 ft (18.8 m)
Deck Area1054.7 sq m
Main Spans3
Year Built1958 (reconstructed 1973)

Traffic

Avg Daily Traffic76,600 (2013)
Truck Traffic7%
Lanes On Bridge3
Lanes Under Bridge4

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000002503

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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