Structure B17006200000000 · Dunn County, WI

Cth Mw over Red Cedar River

Carries Cth Mw over Red Cedar River, 0.1m W Jct Cth M.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructuresets the rating5/9 · Fair
Substructure6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT244 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 5/9 · sets the ratingSubstructure 6/9

244 ft end to end, longest span 92 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.

Built195967 years old
Length244.1 ft74.4 m
Daily traffic265counted 2024
Last inspectedJuly 2024every 24 months

Location

StateWisconsin
CountyDunn
Location0.1m W Jct Cth M
CarriesCth Mw
CrossesRed Cedar River
Coordinates45.05291, -91.71204

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length244.1 ft (74.4 m)
Max Span91.9 ft (28 m)
Deck Width24.6 ft (7.5 m)
Deck Area558 sq m
Main Spans3
Year Built1959

Traffic

Avg Daily Traffic265 (2024)
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure NumberB17006200000000

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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