Structure 53 2400 · Los Angeles County, CA

Route 105 & Lrt over Route 405 Conns Streets

Carries Route 105 & Lrt over Route 405 Conns Streets, 07-la-105-r2.00-haw.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating5/9 · Fair
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT2,369 FT OVERALL500 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 5/9 · sets the ratingSubstructure 7/9

2,369 ft end to end, longest span 172 ft: about 6.6 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 box-beam bridge.

Built199135 years old
Length2369.1 ft722.1 m
Daily traffic160,000counted 2022
Last inspectedApril 2024every 24 months

Location

StateCalifornia
CountyLos Angeles
Location07-la-105-r2.00-haw
CarriesRoute 105 & Lrt
CrossesRoute 405 Conns Streets
Coordinates33.92969, -118.37030

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignBox Beam - Multiple
Total Length2369.1 ft (722.1 m)
Max Span171.9 ft (52.4 m)
Deck Width191.3 ft (58.3 m)
Deck Area42098.4 sq m
Main Spans18
Year Built1991

Traffic

Avg Daily Traffic160,000 (2022)
Truck Traffic4%
Lanes On Bridge8
Lanes Under Bridge42

Inspection & Ownership

Last InspectionApril 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is eligible for the National Register
Scour CriticalNot applicable
Structure Number53 2400

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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