Structure B05021500000000 · Brown County, WI

IH 43 SB over Sth 54 Wb-sth 57 SB

Carries IH 43 SB over Sth 54 Wb-sth 57 SB, 0.7m S Jct Sth 54 To E.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating5/9 · Fair
Substructure6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT182 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 5/9 · sets the ratingSubstructure 6/9

182 ft end to end, longest span 105 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 multi-beam bridge.

Built197947 years old
Length181.8 ft55.4 m
Daily traffic18,200counted 2024
Last inspectedMay 2024every 24 months

Location

StateWisconsin
CountyBrown
Location0.7m S Jct Sth 54 To E
CarriesIH 43 SB
CrossesSth 54 Wb-sth 57 SB
Coordinates44.51870, -87.95621

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignStringer/Multi-beam
Total Length181.8 ft (55.4 m)
Max Span104.7 ft (31.9 m)
Deck Width54.5 ft (16.6 m)
Deck Area919.6 sq m
Main Spans3
Year Built1979

Traffic

Avg Daily Traffic18,200 (2024)
Truck Traffic22%
Lanes On Bridge3
Lanes Under Bridge3

Inspection & Ownership

Last InspectionMay 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure NumberB05021500000000

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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