Structure B37013900000000 · Marathon County, WI

Cth X over Johnson Creek

Carries Cth X over Johnson Creek, 1.7m N Jct Cth C.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating5/9 · Fair
Substructure7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT58 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 5/9 · sets the ratingSubstructure 7/9

58 ft end to end. Lengths and the car 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.

Built1969rebuilt 2021
Length58.4 ft17.8 m
Daily traffic873counted 2023
Last inspectedAugust 2023every 24 months

Location

StateWisconsin
CountyMarathon
Location1.7m N Jct Cth C
CarriesCth X
CrossesJohnson Creek
Coordinates44.73835, -89.60823

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length58.4 ft (17.8 m)
Max Span56.4 ft (17.2 m)
Deck Width37.1 ft (11.3 m)
Deck Area201.1 sq m
Main Spans1
Year Built1969 (reconstructed 2021)

Traffic

Avg Daily Traffic873 (2023)
Lanes On Bridge2

Inspection & Ownership

Last InspectionAugust 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure NumberB37013900000000

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.

Nearby Bridges