Structure 39 0168 · Merced County, CA

State Route 140 over Delta-mendota Canal

Carries State Route 140 over Delta-mendota Canal, 10-mer-140-0.58.

Overall conditionFair

Set by its lowest-rated component: Deck at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructure8/9 · Very Good
Substructure7/9 · Good
Channelnot part of overall9/9 · Excellent
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT106 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 8/9Substructure 7/9

106 ft end to end, longest span 35 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 tee-beam bridge.

Built195175 years old
Length106.3 ft32.4 m
Daily traffic1,175counted 2009
Last inspectedJanuary 2025every 24 months

Location

StateCalifornia
CountyMerced
Location10-mer-140-0.58
CarriesState Route 140
CrossesDelta-mendota Canal
Coordinates37.24601, -121.07839

Physical Characteristics

MaterialConcrete
DesignTee Beam
Total Length106.3 ft (32.4 m)
Max Span35.1 ft (10.7 m)
Deck Width27.9 ft (8.5 m)
Deck Area275.4 sq m
Main Spans3
Year Built1951

Traffic

Avg Daily Traffic1,175 (2009)
Truck Traffic12%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJanuary 2025
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number39 0168

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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