Structure B45003700000000 · Ozaukee County, WI

IH 43 SB over Sth 57 NB

Carries IH 43 SB over Sth 57 NB, 3.3m S Jct Sth 32.

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
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT375 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

375 ft end to end, longest span 151 ft: about 5 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.

Built1974rebuilt 2012
Length374.7 ft114.2 m
Daily traffic15,400counted 2022
Last inspectedAugust 2024every 24 months

Location

StateWisconsin
CountyOzaukee
Location3.3m S Jct Sth 32
CarriesIH 43 SB
CrossesSth 57 NB
Coordinates43.40199, -87.92779

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length374.7 ft (114.2 m)
Max Span150.6 ft (45.9 m)
Deck Width44.0 ft (13.4 m)
Deck Area1530.3 sq m
Main Spans3
Year Built1974 (reconstructed 2012)

Traffic

Avg Daily Traffic15,400 (2022)
Truck Traffic14%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure NumberB45003700000000

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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