Structure 53C1898 · Los Angeles County, CA

Marengo AVE over Metro

Carries Marengo AVE over Metro, Intx Marengo Corson I-210.

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
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT74 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

74 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 rigid-frame bridge.

Built197650 years old
Length74.1 ft22.6 m
Daily traffic21,758counted 2013
Last inspectedJuly 2023every 24 months

Location

StateCalifornia
CountyLos Angeles
LocationIntx Marengo Corson I-210
CarriesMarengo AVE
CrossesMetro
Coordinates34.15090, -118.14621

Physical Characteristics

MaterialConcrete
DesignFrame
Total Length74.1 ft (22.6 m)
Max Span40.0 ft (12.2 m)
Deck Width211.9 ft (64.6 m)
Deck Area1460.0 sq m
Main Spans1
Year Built1976

Traffic

Avg Daily Traffic21,758 (2013)
Truck Traffic5%
Lanes On Bridge5

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number53C1898

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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