Structure B11008100000000 · Columbia County, WI

Lrd Old HWY 73 RD over Ush 151

Carries Lrd Old HWY 73 RD over Ush 151, 1.0 M N Jct Sth 16.

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
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT260 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

260 ft end to end, longest span 127 ft: about 4 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.

Built197650 years old
Length259.5 ft79.1 m
Daily traffic390counted 2022
Last inspectedMarch 2023every 24 months

Location

StateWisconsin
CountyColumbia
Location1.0 M N Jct Sth 16
CarriesLrd Old HWY 73 RD
CrossesUsh 151
Coordinates43.35653, -89.00913

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length259.5 ft (79.1 m)
Max Span127.0 ft (38.7 m)
Deck Width36.7 ft (11.2 m)
Deck Area885.9 sq m
Main Spans2
Year Built1976

Traffic

Avg Daily Traffic390 (2022)
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionMarch 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure NumberB11008100000000

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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