Structure P17090700000000 · Dunn County, WI

Cth Q over Bolen Creek

Carries Cth Q over Bolen Creek, 0.4m N Jct Sth 64.

Overall conditionPoor

Set by its lowest-rated component: Superstructure at 4 of 9.

How ratings work
Deck5/9 · Fair
Superstructuresets the rating4/9 · Poor
Substructure5/9 · Fair
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT51 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 4/9 · sets the ratingSubstructure 5/9

51 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.

Built196858 years old
Length50.9 ft15.5 m
Daily traffic113counted 2024
Last inspectedJuly 2024every 12 months

Location

StateWisconsin
CountyDunn
Location0.4m N Jct Sth 64
CarriesCth Q
CrossesBolen Creek
Coordinates45.13922, -92.12007

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length50.9 ft (15.5 m)
Max Span49.9 ft (15.2 m)
Deck Width28.5 ft (8.7 m)
Deck Area134.8 sq m
Main Spans1
Year Built1968

Traffic

Avg Daily Traffic113 (2024)
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 12 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical7 — Countermeasures installed
Structure NumberP17090700000000

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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