Structure 51552000001046 · Fresno County, CA

Winding Road over Basin Creek

Carries Winding Road over Basin Creek, 11s12-20.3.

Overall conditionPoor

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

How ratings work
Decksets the rating4/9 · Poor
Superstructure6/9 · Satisfactory
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT105 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 4/9 · sets the ratingSuperstructure 6/9Substructure 7/9

105 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.

Built1968rebuilt 1992
Length104.7 ft31.9 m
Daily traffic501 lanes
Last inspectedAugust 2024every 24 months

Location

StateCalifornia
CountyFresno
Location11s12-20.3
CarriesWinding Road
CrossesBasin Creek
Coordinates36.90994, -119.10920

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length104.7 ft (31.9 m)
Max Span102.7 ft (31.3 m)
Deck Width16.1 ft (4.9 m)
Deck Area156.3 sq m
Main Spans2
Year Built1968 (reconstructed 1992)

Traffic

Avg Daily Traffic50
Lanes On Bridge1

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 24 months
OwnerU.S. Forest Service
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number051552000001046

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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