Structure 53 2745R · Los Angeles County, CA

State Route 71 SB over State Route 60 & Ramps

Carries State Route 71 SB over State Route 60 & Ramps, 07-la-071-r4.31-pom.

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
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT869 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 7/9 · sets the rating

869 ft end to end, longest span 182 ft: about 2.4 football fields. 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 box-beam bridge.

Built199729 years old
Length869.4 ft265 m
Daily traffic44,000counted 2020
Last inspectedOctober 2024every 24 months

Location

StateCalifornia
CountyLos Angeles
Location07-la-071-r4.31-pom
CarriesState Route 71 SB
CrossesState Route 60 & Ramps
Coordinates34.02428, -117.75074

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignBox Beam - Single/Spread
Total Length869.4 ft (265 m)
Max Span182.1 ft (55.5 m)
Deck Width68.6 ft (20.9 m)
Deck Area5538.5 sq m
Main Spans5
Year Built1997

Traffic

Avg Daily Traffic44,000 (2020)
Truck Traffic6%
Lanes On Bridge4
Lanes Under Bridge16

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number53 2745R

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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