Structure 53C2323 · Los Angeles County, CA

Baseline Road over Thompson Creek

Carries Baseline Road over Thompson Creek, 0.1 Mi North Of 210.

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

Elevation

Side view, colored by inspection rating
CAR · 15 FT33 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

33 ft end to end. Lengths and the car 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 slab bridge.

Built199828 years old
Length33.5 ft10.2 m
Daily traffic24,624counted 2015
Last inspectedOctober 2021every 48 months

Location

StateCalifornia
CountyLos Angeles
Location0.1 Mi North Of 210
CarriesBaseline Road
CrossesThompson Creek
Coordinates34.12150, -117.73844

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length33.5 ft (10.2 m)
Max Span32.5 ft (9.9 m)
Deck Width80.7 ft (24.6 m)
Deck Area250.9 sq m
Main Spans1
Year Built1998

Traffic

Avg Daily Traffic24,624 (2015)
Truck Traffic4%
Lanes On Bridge4

Inspection & Ownership

Last InspectionOctober 2021
Inspection FrequencyEvery 48 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number53C2323

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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