Structure 53C1777L · Los Angeles County, CA

Sierra HWY Sbnd over Santa Clara Riv

Carries Sierra HWY Sbnd over Santa Clara Riv, 0.3mi S/o Soledad Cyn RD.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructure7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT427 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

427 ft end to end, longest span 50 ft: about 6 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.

Built193888 years old
Length426.8 ft130.1 m
Daily traffic17,640counted 2014
Last inspectedJanuary 2024every 24 months

Location

StateCalifornia
CountyLos Angeles
Location0.3mi S/o Soledad Cyn RD
CarriesSierra HWY Sbnd
CrossesSanta Clara Riv
Coordinates34.41225, -118.45773

Physical Characteristics

MaterialConcrete Continuous
DesignTee Beam
Total Length426.8 ft (130.1 m)
Max Span49.9 ft (15.2 m)
Deck Width42.7 ft (13 m)
Deck Area1691.3 sq m
Main Spans8
Year Built1938

Traffic

Avg Daily Traffic17,640 (2014)
Truck Traffic4%
Lanes On Bridge3

Inspection & Ownership

Last InspectionJanuary 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number53C1777L

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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