US Bridges

State Route 57 NB over Auto Centre Drive

Good

Los Angeles County, California · 07-LA-057-R11.60R-GDR · Structure no. 53 1977R

Built
1971
54 years old
Condition
Good
inspected September 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
125 ft
1 main span
Daily traffic
79,000
2015 count
Owner
State
State Highway Agency

About this bridge

State Route 57 NB over Auto Centre Drive is a prestressed concrete box beam or girders - multiple carrying State Route 57 NB over Auto Centre Drive in Los Angeles County, California. It was built in 1971, so it is 54 years old, younger than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 79,000 vehicles a day, roughly 5% of them trucks, projected to reach 73,179 by 2045. The structure is 125 ft (38.1 m) long and 72 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesState Route 57 NB
CrossesAuto Centre Drive
Location07-LA-057-R11.60R-GDR
RouteState Highway 57
Coordinates34.11736, -117.82376
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating70.8 US tons
Inventory rating48.2 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length125 ft (38.1 m)
Longest span123 ft (37.5 m)
Deck width72 ft (21.9 m)
Roadway width70 ft (21.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic79,000 (2015)
Projected traffic73,179 by 2045
Trucks5%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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 State Route 57 NB over Auto Centre Drive built?

It was built in 1971, making it 54 years old in 2025.

What condition is State Route 57 NB over Auto Centre Drive in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2024.

How much traffic does State Route 57 NB over Auto Centre Drive carry?

About 79,000 vehicles per day (2015 count), of which roughly 5% are trucks.

How long is State Route 57 NB over Auto Centre Drive?

The structure is 125 ft (38.1 m) long with a longest span of 123 ft (37.5 m) and a deck 72 ft wide.

Who owns State Route 57 NB over Auto Centre Drive?

It is owned by the State Highway Agency.