Structure 39C0085 · Merced County, CA

Whitworth Road over Outside Canal

Carries Whitworth Road over Outside Canal, 0.1 Mi S Cottonwood RD.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT38 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

38 ft end to end, longest span 17 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 slab bridge.

Built1965rebuilt 1977
Length38.1 ft11.6 m
Daily traffic400counted 2014
Last inspectedFebruary 2025every 24 months

Location

StateCalifornia
CountyMerced
Location0.1 Mi S Cottonwood RD
CarriesWhitworth Road
CrossesOutside Canal
Coordinates37.18680, -121.03083

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length38.1 ft (11.6 m)
Max Span17.1 ft (5.2 m)
Deck Width32.5 ft (9.9 m)
Deck Area114.8 sq m
Main Spans2
Year Built1965 (reconstructed 1977)

Traffic

Avg Daily Traffic400 (2014)
Truck Traffic3%
Lanes On Bridge2

Inspection & Ownership

Last InspectionFebruary 2025
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number39C0085

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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