Structure 53 0703G · Los Angeles County, CA

N405-e&w10 Connctr over National BLVD

Carries N405-e&w10 Connctr over National BLVD, 07-la-405-29.16-la.

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
SEMI-TRUCK · 72 FT143 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

143 ft end to end, longest span 86 ft. Lengths and the semi-truck 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.

Built196462 years old
Length143.0 ft43.6 m
Daily traffic32,000counted 2019
Last inspectedApril 2023every 24 months

Location

StateCalifornia
CountyLos Angeles
Location07-la-405-29.16-la
CarriesN405-e&w10 Connctr
CrossesNational BLVD
Coordinates34.02687, -118.42956

Physical Characteristics

MaterialConcrete Continuous
DesignBox Beam - Single/Spread
Total Length143.0 ft (43.6 m)
Max Span86.0 ft (26.2 m)
Deck Width40.4 ft (12.3 m)
Deck Area536.3 sq m
Main Spans3
Year Built1964

Traffic

Avg Daily Traffic32,000 (2019)
Truck Traffic2%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number53 0703G

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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