Structure 51652000001036 · Tuolumne County, CA

Winding Road over Blue Canyon Creek

Carries Winding Road over Blue Canyon Creek, No Data Entered.

Overall conditionPoor

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

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
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 FT40 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 3/9 · sets the rating

40 ft end to end. 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.

Built196858 years old
Length40.4 ft12.3 m
Daily traffic501 lanes
Last inspectedSeptember 2024every 24 months

Location

StateCalifornia
CountyTuolumne
LocationNo Data Entered
CarriesWinding Road
CrossesBlue Canyon Creek
Coordinates38.32723, -120.10145

Physical Characteristics

MaterialWood or Timber
DesignStringer/Multi-beam
Total Length40.4 ft (12.3 m)
Max Span39.4 ft (12 m)
Deck Width15.4 ft (4.7 m)
Deck Area57.8 sq m
Main Spans1
Year Built1968

Traffic

Avg Daily Traffic50
Lanes On Bridge1

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerU.S. Forest Service
Historical SignificanceHistorical significance is not determined
Scour Critical2 — Bridge closed (monitoring)
Structure Number051652000001036

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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