Structure 51 0185 · Santa Barbara County, CA

San Ysidro Road over US Highway 101

Carries San Ysidro Road over US Highway 101, 05-sb-101-10.02.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT116 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 6/9 · sets the ratingSubstructure 7/9

116 ft end to end, longest span 58 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.

Built195670 years old
Length116.1 ft35.4 m
Daily traffic11,000counted 2010
Last inspectedJuly 2024every 48 months

Location

StateCalifornia
CountySanta Barbara
Location05-sb-101-10.02
CarriesSan Ysidro Road
CrossesUS Highway 101
Coordinates34.42225, -119.63147

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length116.1 ft (35.4 m)
Max Span58.1 ft (17.7 m)
Deck Width39.7 ft (12.1 m)
Deck Area428.3 sq m
Main Spans2
Year Built1956

Traffic

Avg Daily Traffic11,000 (2010)
Truck Traffic2%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number51 0185

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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