Structure 53 1838G · Los Angeles County, CA

N405-w90 Connector over E90-n405 Conn I 405 Rmps

Carries N405-w90 Connector over E90-n405 Conn I 405 Rmps, 07-la-405-25.99-clc.

Overall conditionFair

Set by its lowest-rated component: Deck at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructure7/9 · Good
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT944 FT OVERALL200 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 7/9Substructure 7/9

944 ft end to end, longest span 110 ft: about 2.6 football fields. 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 multi-beam bridge.

Built196759 years old
Length943.9 ft287.7 m
Daily traffic19,302counted 2019
Last inspectedFebruary 2025every 24 months

Location

StateCalifornia
CountyLos Angeles
Location07-la-405-25.99-clc
CarriesN405-w90 Connector
CrossesE90-n405 Conn I 405 Rmps
Coordinates33.98818, -118.40126

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignStringer/Multi-beam
Total Length943.9 ft (287.7 m)
Max Span109.9 ft (33.5 m)
Deck Width40.0 ft (12.2 m)
Deck Area3509.9 sq m
Main Spans2
Year Built1967

Traffic

Avg Daily Traffic19,302 (2019)
Truck Traffic2%
Lanes On Bridge2
Lanes Under Bridge20

Inspection & Ownership

Last InspectionFebruary 2025
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number53 1838G

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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