Structure B40087300000000 · Milwaukee County, WI

IH 94 WB over S Branch Underwood Creek

Carries IH 94 WB over S Branch Underwood Creek, 1.0 Mi W Jct Sth 100.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructure9/9 · Excellent
Substructure8/9 · Very Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT279 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 9/9Substructure 8/9

279 ft end to end, longest span 137 ft: about 4 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.

Built20179 years old
Length278.5 ft84.9 m
Daily traffic58,500counted 2022
Last inspectedOctober 2023every 24 months

Location

StateWisconsin
CountyMilwaukee
Location1.0 Mi W Jct Sth 100
CarriesIH 94 WB
CrossesS Branch Underwood Creek
Coordinates43.03003, -88.06644

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length278.5 ft (84.9 m)
Max Span137.1 ft (41.8 m)
Deck Width86.9 ft (26.5 m)
Deck Area2249.8 sq m
Main Spans2
Year Built2017

Traffic

Avg Daily Traffic58,500 (2022)
Truck Traffic11%
Lanes On Bridge4

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure NumberB40087300000000

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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