Structure 7917 · Oakland County, MI

Us-24 NB To 696 EB over M-10 SB

Carries Us-24 NB To 696 EB over M-10 SB, In Southfield.

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 FT1,576 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 6/9Substructure 6/9

1,576 ft end to end, longest span 82 ft: about 4.4 football fields. 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.

Built1967rebuilt 1988
Length1575.8 ft480.3 m
Daily traffic17,000counted 1982
Last inspectedMarch 2024every 24 months

Location

StateMichigan
CountyOakland
LocationIn Southfield
CarriesUs-24 NB To 696 EB
CrossesM-10 SB
Coordinates42.48721, -83.28179

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length1575.8 ft (480.3 m)
Max Span82.3 ft (25.1 m)
Deck Width26.9 ft (8.2 m)
Deck Area3938.5 sq m
Main Spans3
Year Built1967 (reconstructed 1988)

Traffic

Avg Daily Traffic17,000 (1982)
Truck Traffic5%
Lanes On Bridge1
Lanes Under Bridge4

Inspection & Ownership

Last InspectionMarch 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000007917

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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