US Bridges

N57-W10 Connector over Interstate 10 & Conns

Fair

Los Angeles County, California · 07-LA-057-R7.66-POM · Structure no. 53 2006G

Built
1972
53 years old
Condition
Fair
inspected September 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
606 ft
6 main spans
Daily traffic
11,300
2015 count
Owner
State
State Highway Agency

About this bridge

N57-W10 Connector over Interstate 10 & Conns is a concrete continuous box beam or girders - multiple carrying N57-W10 Connector over Interstate 10 & Conns 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 11,300 vehicles a day, roughly 4% of them trucks, projected to reach 14,334 by 2045. The structure is 606 ft (184.8 m) long and 34 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesN57-W10 Connector
CrossesInterstate 10 & Conns
Location07-LA-057-R7.66-POM
RouteState Highway 57
CountyLos Angeles County
StateCalifornia
Coordinates34.06474, -117.80594
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 rating67.9 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length606 ft (184.8 m)
Longest span129 ft (39.3 m)
Deck width34 ft (10.4 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deck18 ft (5.6 m)

Traffic and service

Average daily traffic11,300 (2015)
Projected traffic14,334 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

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 N57-W10 Connector over Interstate 10 & Conns built?

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

What condition is N57-W10 Connector over Interstate 10 & Conns 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 N57-W10 Connector over Interstate 10 & Conns carry?

About 11,300 vehicles per day (2015 count), of which roughly 4% are trucks.

How long is N57-W10 Connector over Interstate 10 & Conns?

The structure is 606 ft (184.8 m) long with a longest span of 129 ft (39.3 m) and a deck 34 ft wide.

Who owns N57-W10 Connector over Interstate 10 & Conns?

It is owned by the State Highway Agency.