Structure 53C0435 · Los Angeles County, CA

Lower Azusa RD over Rio Hondo

Carries Lower Azusa RD over Rio Hondo, 1.0mi W/o Peck RD.

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
Channelnot part of overall9/9 · Excellent
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT217 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 7/9Substructure 7/9

217 ft end to end, longest span 83 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 tee-beam bridge.

Built195967 years old
Length216.5 ft66 m
Daily traffic30,816counted 2017
Last inspectedMarch 2023every 24 months

Location

StateCalifornia
CountyLos Angeles
Location1.0mi W/o Peck RD
CarriesLower Azusa RD
CrossesRio Hondo
Coordinates34.09253, -118.03154

Physical Characteristics

MaterialConcrete Continuous
DesignTee Beam
Total Length216.5 ft (66 m)
Max Span83.0 ft (25.3 m)
Deck Width64.0 ft (19.5 m)
Deck Area1,287 sq m
Main Spans3
Year Built1959

Traffic

Avg Daily Traffic30,816 (2017)
Truck Traffic2%
Lanes On Bridge4

Inspection & Ownership

Last InspectionMarch 2023
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number53C0435

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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