Structure 53C0701 · Los Angeles County, CA

Lark Ellen AVE over Walnut Crk

Carries Lark Ellen AVE over Walnut Crk, 0.4mi S/o I-10 FWY.

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 overall9/9 · Excellent
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT49 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

49 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 box-beam bridge.

Built196066 years old
Length48.9 ft14.9 m
Daily traffic11,999counted 2014
Last inspectedNovember 2021every 48 months

Location

StateCalifornia
CountyLos Angeles
Location0.4mi S/o I-10 FWY
CarriesLark Ellen AVE
CrossesWalnut Crk
Coordinates34.06576, -117.91654

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length48.9 ft (14.9 m)
Max Span45.9 ft (14 m)
Deck Width71.9 ft (21.9 m)
Deck Area326.3 sq m
Main Spans1
Year Built1960

Traffic

Avg Daily Traffic11,999 (2014)
Truck Traffic2%
Lanes On Bridge2

Inspection & Ownership

Last InspectionNovember 2021
Inspection FrequencyEvery 48 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number53C0701

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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