Structure B12002800000000 · Crawford County, WI

Ush 18-sth 60 over Mississippi River 02

Carries Ush 18-sth 60 over Mississippi River 02, 0.7m E Iowa State Line.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructure6/9 · Satisfactory
Substructure7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,917 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 6/9Substructure 7/9

1,917 ft end to end, longest span 350 ft: about 5.3 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 girder bridge.

Built197452 years old
Length1917.3 ft584.4 m
Daily traffic8,800counted 2022
Last inspectedAugust 2023every 12 months

Location

StateWisconsin
CountyCrawford
Location0.7m E Iowa State Line
CarriesUsh 18-sth 60
CrossesMississippi River 02
Coordinates43.04532, -91.16238

Physical Characteristics

MaterialSteel Continuous
DesignGirder and Floorbeam
Total Length1917.3 ft (584.4 m)
Max Span350.1 ft (106.7 m)
Deck Width44.0 ft (13.4 m)
Deck Area7831.0 sq m
Main Spans10
Year Built1974

Traffic

Avg Daily Traffic8,800 (2022)
Truck Traffic15%
Lanes On Bridge2

Inspection & Ownership

Last InspectionAugust 2023
Inspection FrequencyEvery 12 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure NumberB12002800000000

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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