US Bridges

S57-E10 Connector over I 10 & N71-W10 Connector

Fair

Los Angeles County, California · 07-LA-057-R7.72-SDMS · Structure no. 53 2005F

Built
1972
53 years old
Condition
Fair
inspected September 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
525 ft
5 main spans
Daily traffic
29,750
2015 count
Owner
State
State Highway Agency

About this bridge

S57-E10 Connector over I 10 & N71-W10 Connector is a concrete continuous box beam or girders - multiple carrying S57-E10 Connector over I 10 & N71-W10 Connector in Los Angeles County, California. It was built in 1972, so it is 53 years old, younger than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 29,750 vehicles a day, roughly 4% of them trucks, projected to reach 44,990 by 2045. The structure is 525 ft (160 m) long and 34 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesS57-E10 Connector
CrossesI 10 & N71-W10 Connector
Location07-LA-057-R7.72-SDMS
RouteState Highway 57
CountyLos Angeles County
StateCalifornia
Coordinates34.06537, -117.80534
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating110 US tons
Inventory rating66.8 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20 + Mod
Structure length525 ft (160 m)
Longest span143 ft (43.6 m)
Deck width34 ft (10.4 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deck17 ft (5 m)

Traffic and service

Average daily traffic29,750 (2015)
Projected traffic44,990 by 2045
Trucks4%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was S57-E10 Connector over I 10 & N71-W10 Connector built?

It was built in 1972, making it 53 years old in 2025.

What condition is S57-E10 Connector over I 10 & N71-W10 Connector in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in September 2024.

How much traffic does S57-E10 Connector over I 10 & N71-W10 Connector carry?

About 29,750 vehicles per day (2015 count), of which roughly 4% are trucks.

How long is S57-E10 Connector over I 10 & N71-W10 Connector?

The structure is 525 ft (160 m) long with a longest span of 143 ft (43.6 m) and a deck 34 ft wide.

Who owns S57-E10 Connector over I 10 & N71-W10 Connector?

It is owned by the State Highway Agency.