Structure 9095 · Saginaw County, MI

M-46 over Overflow East

Carries M-46 over Overflow East, 0.1 Mi W Of M-47.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT225 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

225 ft end to end, longest span 75 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.

Built1954rebuilt 1993
Length225.1 ft68.6 m
Daily traffic26,627counted 2007
Last inspectedAugust 2023every 24 months

Location

StateMichigan
CountySaginaw
Location0.1 Mi W Of M-47
CarriesM-46
CrossesOverflow East
Coordinates43.41553, -84.04069

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length225.1 ft (68.6 m)
Max Span74.8 ft (22.8 m)
Deck Width71.9 ft (21.9 m)
Deck Area1502.3 sq m
Main Spans3
Year Built1954 (reconstructed 1993)

Traffic

Avg Daily Traffic26,627 (2007)
Truck Traffic3%
Lanes On Bridge4

Inspection & Ownership

Last InspectionAugust 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical7 — Countermeasures installed
Structure Number000000000009095

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