Structure 2700 · Genesee County, MI

14th ST over I-475

Carries 14th ST over I-475, In Flint.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT165 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

165 ft end to end, longest span 79 ft: about 2 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.

Built1971rebuilt 2010
Length165.4 ft50.4 m
Daily traffic1,794counted 1992
Last inspectedJuly 2024every 24 months

Location

StateMichigan
CountyGenesee
LocationIn Flint
Carries14th ST
CrossesI-475
Coordinates43.00535, -83.67714

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length165.4 ft (50.4 m)
Max Span79.4 ft (24.2 m)
Deck Width37.1 ft (11.3 m)
Deck Area569.5 sq m
Main Spans2
Year Built1971 (reconstructed 2010)

Traffic

Avg Daily Traffic1,794 (1992)
Truck Traffic1%
Lanes On Bridge2
Lanes Under Bridge8

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000002700

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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