Structure 53 1175 · Los Angeles County, CA

Interstate 405 over Crenshaw BLVD

Carries Interstate 405 over Crenshaw BLVD, 07-la-405-15.45-tor.

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 FT180 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 7/9Substructure 7/9

180 ft end to end, longest span 108 ft: about 3 semi-trucks nose to tail. 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.

Built196264 years old
Length180.4 ft55 m
Daily traffic269,000counted 2019
Last inspectedMay 2024every 24 months

Location

StateCalifornia
CountyLos Angeles
Location07-la-405-15.45-tor
CarriesInterstate 405
CrossesCrenshaw BLVD
Coordinates33.86470, -118.32621

Physical Characteristics

MaterialConcrete Continuous
DesignBox Beam - Multiple
Total Length180.4 ft (55 m)
Max Span107.9 ft (32.9 m)
Deck Width149.0 ft (45.4 m)
Deck Area2,497 sq m
Main Spans3
Year Built1962

Traffic

Avg Daily Traffic269,000 (2019)
Truck Traffic5%
Lanes On Bridge12
Lanes Under Bridge6

Inspection & Ownership

Last InspectionMay 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number53 1175

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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