Structure B40076600000000 · Milwaukee County, WI

Sth 181-n 76th ST over Lrd W Silver Spring Driv

Carries Sth 181-n 76th ST over Lrd W Silver Spring Driv, 0.3 Mi N Jct Sth 145.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructure8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT120 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 8/9

120 ft end to end, longest span 58 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 multi-beam bridge.

Built20179 years old
Length120.4 ft36.7 m
Daily traffic28,900counted 2022
Last inspectedOctober 2021every 48 months

Location

StateWisconsin
CountyMilwaukee
Location0.3 Mi N Jct Sth 145
CarriesSth 181-n 76th ST
CrossesLrd W Silver Spring Driv
Coordinates43.11971, -88.00580

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length120.4 ft (36.7 m)
Max Span58.1 ft (17.7 m)
Deck Width109.9 ft (33.5 m)
Deck Area1229.5 sq m
Main Spans2
Year Built2017

Traffic

Avg Daily Traffic28,900 (2022)
Lanes On Bridge6
Lanes Under Bridge4

Inspection & Ownership

Last InspectionOctober 2021
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure NumberB40076600000000

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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