Structure 53 0714 · Los Angeles County, CA

Interstate 405 over Church Lane

Carries Interstate 405 over Church Lane, 07-la-405-33.20-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 FT544 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

544 ft end to end: about 1.5 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 box-beam bridge.

Built1955rebuilt 2014
Length543.6 ft165.7 m
Daily traffic274,000counted 2019
Last inspectedMay 2023every 24 months

Location

StateCalifornia
CountyLos Angeles
Location07-la-405-33.20-la
CarriesInterstate 405
CrossesChurch Lane
Coordinates34.07467, -118.46769

Physical Characteristics

MaterialConcrete
DesignBox Beam - Multiple
Total Length543.6 ft (165.7 m)
Max Span72.5 ft (22.1 m)
Deck Width186.4 ft (56.8 m)
Deck Area9411.8 sq m
Main Spans1
Year Built1955 (reconstructed 2014)

Traffic

Avg Daily Traffic274,000 (2019)
Truck Traffic10%
Lanes On Bridge11
Lanes Under Bridge2

Inspection & Ownership

Last InspectionMay 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number53 0714

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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