Structure 53C0677 · Los Angeles County, CA

Merced AVE over Big Dalton Wash

Carries Merced AVE over Big Dalton Wash, 0.3mi W/o Puente AVE.

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 FT66 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

66 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 multi-beam bridge.

Built195967 years old
Length65.9 ft20.1 m
Daily traffic13,309counted 2012
Last inspectedJuly 2021every 48 months

Location

StateCalifornia
CountyLos Angeles
Location0.3mi W/o Puente AVE
CarriesMerced AVE
CrossesBig Dalton Wash
Coordinates34.07433, -117.96398

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length65.9 ft (20.1 m)
Max Span62.0 ft (18.9 m)
Deck Width73.8 ft (22.5 m)
Deck Area452.2 sq m
Main Spans1
Year Built1959

Traffic

Avg Daily Traffic13,309 (2012)
Truck Traffic1%
Lanes On Bridge4

Inspection & Ownership

Last InspectionJuly 2021
Inspection FrequencyEvery 48 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number53C0677

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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