Structure B40034000000000 · Milwaukee County, WI

Sth 100 Sb-mayfair over Menomonee River

Carries Sth 100 Sb-mayfair over Menomonee River, 0.3m S Jct Sth 190.

Overall conditionPoor

Set by its lowest-rated component: Substructure at 3 of 9.

How ratings work
Deck4/9 · Poor
Superstructure4/9 · Poor
Substructuresets the rating3/9 · Serious
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT211 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 4/9Superstructure 4/9Substructure 3/9 · sets the rating

211 ft end to end, longest span 47 ft: 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 slab bridge.

Built196858 years old
Length211.0 ft64.3 m
Daily traffic11,300counted 2022
Last inspectedAugust 2024every 12 months

Location

StateWisconsin
CountyMilwaukee
Location0.3m S Jct Sth 190
CarriesSth 100 Sb-mayfair
CrossesMenomonee River
Coordinates43.08498, -88.04796

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length211.0 ft (64.3 m)
Max Span46.9 ft (14.3 m)
Deck Width45.6 ft (13.9 m)
Deck Area893.8 sq m
Main Spans5
Year Built1968

Traffic

Avg Daily Traffic11,300 (2022)
Truck Traffic4%
Lanes On Bridge3

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 12 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure NumberB40034000000000

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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