Structure B40098000000000 · Milwaukee County, WI

Ush 18 Wb-state ST over Milwaukee River

Carries Ush 18 Wb-state ST over Milwaukee River, 0.4m W Jct Sth 32 To N.

Overall conditionFair

Set by its lowest-rated component: Substructure at 5 of 9.

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating5/9 · Fair
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT274 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 5/9 · sets the rating

274 ft end to end: 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 bascule bridge (drawn closed).

Built1924102 years old
Length274.0 ft83.5 m
Daily traffic5,123counted 2023
Last inspectedMay 2024every 24 months

Location

StateWisconsin
CountyMilwaukee
Location0.4m W Jct Sth 32 To N
CarriesUsh 18 Wb-state ST
CrossesMilwaukee River
Coordinates43.04286, -87.91369

Physical Characteristics

MaterialSteel
DesignMovable - Bascule
Total Length274.0 ft (83.5 m)
Max Span119.1 ft (36.3 m)
Deck Width80.7 ft (24.6 m)
Deck Area2054.1 sq m
Main Spans1
Year Built1924

Traffic

Avg Daily Traffic5,123 (2023)
Truck Traffic6%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMay 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is eligible for the National Register
Scour Critical8 — Stable, low risk
Structure NumberB40098000000000

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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