Structure B37036700000000 · Marathon County, WI

Sth 52-bridge ST over Ush 51

Carries Sth 52-bridge ST over Ush 51, 0.8 Mi. N. Jct Sth 52.

Overall conditionGood

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

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

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT205 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 7/9 · sets the rating

205 ft end to end, longest span 101 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.

Built200620 years old
Length205.1 ft62.5 m
Daily traffic17,400counted 2022
Last inspectedJune 2022every 48 months

Location

StateWisconsin
CountyMarathon
Location0.8 Mi. N. Jct Sth 52
CarriesSth 52-bridge ST
CrossesUsh 51
Coordinates44.96944, -89.65653

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignStringer/Multi-beam
Total Length205.1 ft (62.5 m)
Max Span100.7 ft (30.7 m)
Deck Width104.0 ft (31.7 m)
Deck Area1981.2 sq m
Main Spans2
Year Built2006

Traffic

Avg Daily Traffic17,400 (2022)
Lanes On Bridge6
Lanes Under Bridge4

Inspection & Ownership

Last InspectionJune 2022
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure NumberB37036700000000

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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