Structure 53C1875 · Los Angeles County, CA

Avenue 26 over Arroyo Seco Channel

Carries Avenue 26 over Arroyo Seco Channel, At SR 110.

Overall conditionGood

Set by its lowest-rated component: Deck and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT141 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 7/9 · sets the rating

141 ft end to end, longest span 100 ft. 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.

Built193987 years old
Length141.1 ft43 m
Daily traffic32,700counted 2016
Last inspectedSeptember 2024every 24 months

Location

StateCalifornia
CountyLos Angeles
LocationAt SR 110
CarriesAvenue 26
CrossesArroyo Seco Channel
Coordinates34.08321, -118.22171

Physical Characteristics

MaterialConcrete
DesignArch - Deck
Total Length141.1 ft (43 m)
Max Span100.1 ft (30.5 m)
Deck Width55.1 ft (16.8 m)
Deck Area722.4 sq m
Main Spans2
Year Built1939

Traffic

Avg Daily Traffic32,700 (2016)
Truck Traffic3%
Lanes On Bridge4

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number53C1875

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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