Structure B12003100000000 · Crawford County, WI

Sth 60 over Gran Grae Creek

Carries Sth 60 over Gran Grae Creek, 4.8m E Jct Ush 18 To E.

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 overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT136 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

136 ft end to end, longest span 67 ft. 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.

Built197749 years old
Length136.5 ft41.6 m
Daily traffic2,000counted 2022
Last inspectedApril 2023every 24 months

Location

StateWisconsin
CountyCrawford
Location4.8m E Jct Ush 18 To E
CarriesSth 60
CrossesGran Grae Creek
Coordinates43.04279, -90.98727

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length136.5 ft (41.6 m)
Max Span66.6 ft (20.3 m)
Deck Width39.7 ft (12.1 m)
Deck Area503.4 sq m
Main Spans2
Year Built1977

Traffic

Avg Daily Traffic2,000 (2022)
Truck Traffic8%
Lanes On Bridge2

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure NumberB12003100000000

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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