Structure B18013100000000 · Eau Claire County, WI

Sth312wb(old Sth12 over Chippewa River

Carries Sth312wb(old Sth12 over Chippewa River, 1.4m S Jct Ush 53 To S.

Overall conditionFair

Set by its lowest-rated component: Deck at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
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 FT1,488 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

1,488 ft end to end, longest span 154 ft: about 4.1 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 multi-beam bridge.

Built1992rebuilt 1993
Length1487.9 ft453.5 m
Daily traffic12,450counted 2021
Last inspectedJuly 2023every 24 months

Location

StateWisconsin
CountyEau Claire
Location1.4m S Jct Ush 53 To S
CarriesSth312wb(old Sth12
CrossesChippewa River
Coordinates44.84111, -91.49615

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length1487.9 ft (453.5 m)
Max Span153.9 ft (46.9 m)
Deck Width43.0 ft (13.1 m)
Deck Area5940.9 sq m
Main Spans10
Year Built1992 (reconstructed 1993)

Traffic

Avg Daily Traffic12,450 (2021)
Truck Traffic3%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure NumberB18013100000000

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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