Structure B40057100000000 · Milwaukee County, WI

Sth 38-chase AVE over Cnw Rr

Carries Sth 38-chase AVE over Cnw Rr, 3.7m N Jct Cth Zz.

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
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT141 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 4/9Superstructure 4/9Substructure 3/9 · sets the rating

141 ft end to end, longest span 47 ft. 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.

Built1939rebuilt 1982
Length141.1 ft43 m
Daily traffic20,130counted 2023
Last inspectedSeptember 2024every 12 months

Location

StateWisconsin
CountyMilwaukee
Location3.7m N Jct Cth Zz
CarriesSth 38-chase AVE
CrossesCnw Rr
Coordinates42.98407, -87.90933

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length141.1 ft (43 m)
Max Span46.6 ft (14.2 m)
Deck Width89.9 ft (27.4 m)
Deck Area1178.2 sq m
Main Spans3
Year Built1939 (reconstructed 1982)

Traffic

Avg Daily Traffic20,130 (2023)
Truck Traffic3%
Lanes On Bridge4

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 12 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure NumberB40057100000000

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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