Structure 53C1882 · Los Angeles County, CA

Hyperion AVE over Riverside Drive

Carries Hyperion AVE over Riverside Drive, 0.05 Mi W/o FWY 5.

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 FT518 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

518 ft end to end, longest span 135 ft: about 7 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 deck arch.

Built192997 years old
Length518.4 ft158 m
Daily traffic35,874counted 2016
Last inspectedApril 2024every 24 months

Location

StateCalifornia
CountyLos Angeles
Location0.05 Mi W/o FWY 5
CarriesHyperion AVE
CrossesRiverside Drive
Coordinates34.11183, -118.26816

Physical Characteristics

MaterialConcrete
DesignArch - Deck
Total Length518.4 ft (158 m)
Max Span134.8 ft (41.1 m)
Deck Width68.2 ft (20.8 m)
Deck Area3286.4 sq m
Main Spans3
Year Built1929

Traffic

Avg Daily Traffic35,874 (2016)
Truck Traffic4%
Lanes On Bridge4
Lanes Under Bridge5

Inspection & Ownership

Last InspectionApril 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is eligible for the National Register
Scour CriticalNot applicable
Structure Number53C1882

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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