Structure 53C0283R · Los Angeles County, CA

2nd ST (eb) over San Gabriel Riv

Carries 2nd ST (eb) over San Gabriel Riv, 0.8mi E/o Sr-1 HWY.

Overall conditionFair

Set by its lowest-rated component: Substructure at 6 of 9.

How ratings work
Deck7/9 · Good
Superstructure8/9 · Very Good
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT256 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 8/9Substructure 6/9 · sets the rating

256 ft end to end, longest span 72 ft: about 4 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 multi-beam bridge.

Built196462 years old
Length255.9 ft78 m
Daily traffic20,882counted 2015
Last inspectedJanuary 2025every 48 months

Location

StateCalifornia
CountyLos Angeles
Location0.8mi E/o Sr-1 HWY
Carries2nd ST (eb)
CrossesSan Gabriel Riv
Coordinates33.75949, -118.09886

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length255.9 ft (78 m)
Max Span71.9 ft (21.9 m)
Deck Width44.0 ft (13.4 m)
Deck Area1045.2 sq m
Main Spans5
Year Built1964

Traffic

Avg Daily Traffic20,882 (2015)
Truck Traffic4%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJanuary 2025
Inspection FrequencyEvery 48 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number53C0283R

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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