Structure R0092 · Watonwan County, MN

Service RD over Jud Ditch # 7

Carries Service RD over Jud Ditch # 7, 0.7 Mi N Of Csah 3.

Overall conditionPoor

Set by its lowest-rated component: Deck and Substructure at 4 of 9.

How ratings work
Decksets the rating4/9 · Poor
Superstructure5/9 · Fair
Substructuresets the rating4/9 · Poor
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT58 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 4/9 · sets the ratingSuperstructure 5/9Substructure 4/9 · sets the rating

58 ft end to end, longest span 14 ft. 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.

Built197056 years old
Length58.1 ft17.7 m
Daily traffic1counted 2009
Last inspectedSeptember 2011every 12 months

Location

StateMinnesota
CountyWatonwan
Location0.7 Mi N Of Csah 3
CarriesService RD
CrossesJud Ditch # 7
Coordinates44.06156, -94.38036

Physical Characteristics

MaterialWood or Timber
DesignStringer/Multi-beam
Total Length58.1 ft (17.7 m)
Max Span14.1 ft (4.3 m)
Deck Width20.0 ft (6.1 m)
Deck Area108.0 sq m
Main Spans4
Year Built1970

Traffic

Avg Daily Traffic1 (2009)
Lanes On Bridge1

Inspection & Ownership

Last InspectionSeptember 2011
Inspection FrequencyEvery 12 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure NumberR0092

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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