Structure 5396 · Lapeer County, MI

Winslow Road over Weston Drain Extension

Carries Winslow Road over Weston Drain Extension, Sec 35-36 Attica Twp.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructuresets the rating5/9 · Fair
Substructuresets the rating5/9 · Fair
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
21 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 5/9Substructure 5/9

21 ft end to end. Lengths are drawn to scale; at this length a semi-truck would be a speck. 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.

Built194581 years old
Length21.0 ft6.4 m
Daily traffic345counted 2016
Last inspectedJune 2023every 24 months

Location

StateMichigan
CountyLapeer
LocationSec 35-36 Attica Twp
CarriesWinslow Road
CrossesWeston Drain Extension
Coordinates42.98705, -83.12435

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length21.0 ft (6.4 m)
Max Span20.0 ft (6.1 m)
Deck Width31.5 ft (9.6 m)
Deck Area61.4 sq m
Main Spans1
Year Built1945

Traffic

Avg Daily Traffic345 (2016)
Lanes On Bridge2

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure Number000000000005396

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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