US Bridges

State Route 57 over Covina Blvd

Fair

Los Angeles County, California · 07-LA-057-R10.27-SDMS · Structure no. 53 1997

Built
1971
54 years old
Condition
Fair
inspected September 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
181 ft
1 main span
Daily traffic
158,000
2022 count
Owner
State
State Highway Agency

About this bridge

State Route 57 over Covina Blvd is a prestressed concrete box beam or girders - multiple carrying State Route 57 over Covina Blvd 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 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 158,000 vehicles a day, roughly 5% of them trucks, projected to reach 146,359 by 2045. The structure is 181 ft (55.2 m) long and 182 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesState Route 57
CrossesCovina Blvd
Location07-LA-057-R10.27-SDMS
RouteState Highway 57
Coordinates34.0992, -117.81908
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
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 geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74.6 US tons
Inventory rating44.6 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length181 ft (55.2 m)
Longest span179 ft (54.6 m)
Deck width182 ft (55.5 m)
Roadway width178 ft (54.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic158,000 (2022)
Projected traffic146,359 by 2045
Trucks5%
Lanes on structure10
Traffic directionTwo-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 over Covina Blvd built?

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

What condition is State Route 57 over Covina Blvd 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 State Route 57 over Covina Blvd carry?

About 158,000 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is State Route 57 over Covina Blvd?

The structure is 181 ft (55.2 m) long with a longest span of 179 ft (54.6 m) and a deck 182 ft wide.

Who owns State Route 57 over Covina Blvd?

It is owned by the State Highway Agency.