Structure B40082800000000 · Milwaukee County, WI

IH 43 Nb/94 WB over Lrd S13th ST

Carries IH 43 Nb/94 WB over Lrd S13th ST, 4.5 Mi S Jct Sth 59.

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
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT699 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

699 ft end to end, longest span 133 ft: about 1.9 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.

Built201016 years old
Length699.5 ft213.2 m
Daily traffic61,000counted 2021
Last inspectedOctober 2024every 48 months

Location

StateWisconsin
CountyMilwaukee
Location4.5 Mi S Jct Sth 59
CarriesIH 43 Nb/94 WB
CrossesLrd S13th ST
Coordinates42.96569, -87.92935

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignStringer/Multi-beam
Total Length699.5 ft (213.2 m)
Max Span132.9 ft (40.5 m)
Deck Width86.9 ft (26.5 m)
Deck Area5649.8 sq m
Main Spans7
Year Built2010

Traffic

Avg Daily Traffic61,000 (2021)
Truck Traffic9%
Lanes On Bridge5
Lanes Under Bridge4

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure NumberB40082800000000

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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