Structure B05014900000000 · Brown County, WI

Sth 172 over Sth57-riverside Dr-fox R

Carries Sth 172 over Sth57-riverside Dr-fox R, 1.7m E Jct Ush 41.

Overall conditionFair

Set by its lowest-rated component: Superstructure and Substructure at 6 of 9.

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT3,225 FT OVERALL500 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 6/9 · sets the rating

3,225 ft end to end, longest span 220 ft: about 9.0 football fields. 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.

Built1975rebuilt 2010
Length3225.1 ft983 m
Daily traffic84,700counted 2021
Last inspectedJune 2023every 24 months

Location

StateWisconsin
CountyBrown
Location1.7m E Jct Ush 41
CarriesSth 172
CrossesSth57-riverside Dr-fox R
Coordinates44.47625, -88.04984

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length3225.1 ft (983 m)
Max Span220.1 ft (67.1 m)
Deck Width102.4 ft (31.2 m)
Deck Area30669.6 sq m
Main Spans18
Year Built1975 (reconstructed 2010)

Traffic

Avg Daily Traffic84,700 (2021)
Truck Traffic1%
Lanes On Bridge6
Lanes Under Bridge4

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure NumberB05014900000000

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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