Structure B67012400000000 · Waukesha County, WI

IH 43 NB over Lrd Hilo DR

Carries IH 43 NB over Lrd Hilo DR, 4.8 Mi N Jct Sth 83.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT178 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

178 ft end to end, longest span 76 ft: about 2 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.

Built197056 years old
Length178.1 ft54.3 m
Daily traffic17,400counted 2022
Last inspectedJuly 2023every 24 months

Location

StateWisconsin
CountyWaukesha
Location4.8 Mi N Jct Sth 83
CarriesIH 43 NB
CrossesLrd Hilo DR
Coordinates42.89751, -88.25828

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length178.1 ft (54.3 m)
Max Span76.1 ft (23.2 m)
Deck Width58.7 ft (17.9 m)
Deck Area972.0 sq m
Main Spans3
Year Built1970

Traffic

Avg Daily Traffic17,400 (2022)
Truck Traffic14%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure NumberB67012400000000

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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