US Bridges

S57-E10 Connector over N57-E10 Connector Ramp

Fair

Los Angeles County, California · 07-LA-057-R7.72-POM · Structure no. 53 2001F

Built
1972
53 years old
Condition
Fair
inspected September 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
136 ft
1 main span
Daily traffic
26,750
2015 count
Owner
State
State Highway Agency

About this bridge

S57-E10 Connector over N57-E10 Connector Ramp is a prestressed concrete box beam or girders - multiple carrying S57-E10 Connector over N57-E10 Connector Ramp 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 5 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 26,750 vehicles a day, roughly 2% of them trucks, projected to reach 31,535 by 2045. The structure is 136 ft (41.5 m) long and 34 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesS57-E10 Connector
CrossesN57-E10 Connector Ramp
Location07-LA-057-R7.72-POM
RouteState Highway 57
CountyLos Angeles County
StateCalifornia
Coordinates34.06554, -117.8042
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72.5 US tons
Inventory rating56.1 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length136 ft (41.5 m)
Longest span133 ft (40.5 m)
Deck width34 ft (10.4 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic26,750 (2015)
Projected traffic31,535 by 2045
Trucks2%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate 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 N57-E10 Connector Ramp built?

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

What condition is S57-E10 Connector over N57-E10 Connector Ramp 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 N57-E10 Connector Ramp carry?

About 26,750 vehicles per day (2015 count), of which roughly 2% are trucks.

How long is S57-E10 Connector over N57-E10 Connector Ramp?

The structure is 136 ft (41.5 m) long with a longest span of 133 ft (40.5 m) and a deck 34 ft wide.

Who owns S57-E10 Connector over N57-E10 Connector Ramp?

It is owned by the State Highway Agency.