Structure B40085800000000 · Milwaukee County, WI

IH Ramps IH 94 Eb/ over IH Ramp IH 41 NB To Blue

Carries IH Ramps IH 94 Eb/ over IH Ramp IH 41 NB To Blue, Zoo Interchange.

Overall conditionGood

Set by its lowest-rated component: Substructure at 7 of 9.

How ratings work
Deck9/9 · Excellent
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT236 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 9/9Superstructure 8/9Substructure 7/9 · sets the rating

236 ft end to end: 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.

Built201610 years old
Length235.6 ft71.8 m
Daily traffic39,300counted 2022
Last inspectedNovember 2021every 42 months

Location

StateWisconsin
CountyMilwaukee
LocationZoo Interchange
CarriesIH Ramps IH 94 Eb/
CrossesIH Ramp IH 41 NB To Blue
Coordinates43.03015, -88.03363

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length235.6 ft (71.8 m)
Max Span40.7 ft (12.4 m)
Deck Width235.6 ft (71.8 m)
Deck Area5155.2 sq m
Main Spans1
Year Built2016

Traffic

Avg Daily Traffic39,300 (2022)
Truck Traffic12%
Lanes On Bridge3
Lanes Under Bridge1

Inspection & Ownership

Last InspectionNovember 2021
Inspection FrequencyEvery 42 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure NumberB40085800000000

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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