Structure 2688 · Genesee County, MI

Left Turn Lane No1 over I-475

Carries Left Turn Lane No1 over I-475, At S Limits Of Flint.

Overall conditionFair

Set by its lowest-rated component: Deck at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT140 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

140 ft end to end, longest span 70 ft. 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
Length140.1 ft42.7 m
Daily traffic3,300counted 1988
Last inspectedJuly 2024every 24 months

Location

StateMichigan
CountyGenesee
LocationAt S Limits Of Flint
CarriesLeft Turn Lane No1
CrossesI-475
Coordinates42.98046, -83.68207

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length140.1 ft (42.7 m)
Max Span69.9 ft (21.3 m)
Deck Width24.0 ft (7.3 m)
Deck Area311.7 sq m
Main Spans2
Year Built1971 (reconstructed 2010)

Traffic

Avg Daily Traffic3,300 (1988)
Lanes On Bridge1
Lanes Under Bridge4

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 Number000000000002688

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