Structure 53C0479 · Los Angeles County, CA

Bouquet Cyn RD over Plum Cyn Chan

Carries Bouquet Cyn RD over Plum Cyn Chan, 3.0mi N/o Soledad Cyn RD.

Overall conditionGood

Set by its lowest-rated component: Culvert at 7 of 9.

How ratings work
Culvertsets the rating7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
20 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 7/9

A culvert 20 ft across. Lengths are drawn to scale; at this length a semi-truck would be a speck. Each part is colored by its latest inspection rating. The inventory records lengths but not heights, so those are drawn as typical for a culvert.

Built196759 years old
Length20.0 ft6.1 m
Daily traffic27,396counted 2014
Last inspectedJanuary 2022every 48 months

Location

StateCalifornia
CountyLos Angeles
Location3.0mi N/o Soledad Cyn RD
CarriesBouquet Cyn RD
CrossesPlum Cyn Chan
Coordinates34.44931, -118.49849

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length20.0 ft (6.1 m)
Max Span20.0 ft (6.1 m)
Deck Width107.3 ft (32.7 m)
Deck Area199.5 sq m
Main Spans1
Year Built1967

Traffic

Avg Daily Traffic27,396 (2014)
Truck Traffic2%
Lanes On Bridge6

Inspection & Ownership

Last InspectionJanuary 2022
Inspection FrequencyEvery 48 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number53C0479

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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