Structure B40030100000000 · Milwaukee County, WI

Sth 100 Sb-s 108th over IH 43 NB

Carries Sth 100 Sb-s 108th over IH 43 NB, 0.2m S Jct Cth Y (d).

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
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT113 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 5/9Substructure 5/9

113 ft end to end, longest span 47 ft. Lengths and the car 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 slab bridge.

Built196561 years old
Length112.9 ft34.4 m
Daily traffic12,900counted 2022
Last inspectedMarch 2024every 24 months

Location

StateWisconsin
CountyMilwaukee
Location0.2m S Jct Cth Y (d)
CarriesSth 100 Sb-s 108th
CrossesIH 43 NB
Coordinates42.95575, -88.04821

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length112.9 ft (34.4 m)
Max Span46.9 ft (14.3 m)
Deck Width45.6 ft (13.9 m)
Deck Area478.2 sq m
Main Spans3
Year Built1965

Traffic

Avg Daily Traffic12,900 (2022)
Truck Traffic3%
Lanes On Bridge3
Lanes Under Bridge2

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 NumberB40030100000000

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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