Structure L8348 · Clay County, MN

T 240 over Stony Creek

Carries T 240 over Stony Creek, 0.7 Mi E Of Jct Csah 52.

Overall conditionPoor

Set by its lowest-rated component: Substructure at 3 of 9.

How ratings work
Deck5/9 · Fair
Superstructure6/9 · Satisfactory
Substructuresets the rating3/9 · Serious
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT48 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 6/9Substructure 3/9 · sets the rating

48 ft end to end, longest span 23 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.

Built194581 years old
Length47.9 ft14.6 m
Daily traffic5counted 1986
Last inspectedOctober 2019every 12 months

Location

StateMinnesota
CountyClay
Location0.7 Mi E Of Jct Csah 52
CarriesT 240
CrossesStony Creek
Coordinates46.73233, -96.57414

Physical Characteristics

MaterialWood or Timber
DesignStringer/Multi-beam
Total Length47.9 ft (14.6 m)
Max Span23.0 ft (7 m)
Deck Width20.0 ft (6.1 m)
Deck Area89.1 sq m
Main Spans2
Year Built1945

Traffic

Avg Daily Traffic5 (1986)
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2019
Inspection FrequencyEvery 12 months
OwnerTown/Township Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure NumberL8348

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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