US Bridges

Interstate 10 over W Covina Parkway

Fair

Los Angeles County, California · 07-LA-010-34.46-WCOV · Structure no. 53 2372

Built
1975
50 years old, rebuilt 2019
Condition
Fair
inspected August 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
217 ft
2 main spans
Daily traffic
215,000
2014 count
Owner
State
State Highway Agency

About this bridge

Interstate 10 over W Covina Parkway is a prestressed concrete continuous box beam or girders - multiple carrying Interstate 10 over W Covina Parkway in Los Angeles County, California. It was built in 1975 and reconstructed in 2019, so it is 50 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 215,000 vehicles a day, roughly 10% of them trucks, projected to reach 286,467 by 2040. The structure is 217 ft (66 m) long and 203 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesInterstate 10
CrossesW Covina Parkway
Location07-LA-010-34.46-WCOV
RouteInterstate 10
Coordinates34.07194, -117.94286
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating90.9 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length217 ft (66 m)
Longest span109 ft (33.2 m)
Deck width203 ft (62 m)
Roadway width194 ft (59 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic215,000 (2014)
Projected traffic286,467 by 2040
Trucks10%
Lanes on structure10
Traffic directionTwo-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 Interstate 10 over W Covina Parkway built?

It was built in 1975, making it 50 years old in 2025. It was reconstructed in 2019.

What condition is Interstate 10 over W Covina Parkway 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 August 2023.

How much traffic does Interstate 10 over W Covina Parkway carry?

About 215,000 vehicles per day (2014 count), of which roughly 10% are trucks.

How long is Interstate 10 over W Covina Parkway?

The structure is 217 ft (66 m) long with a longest span of 109 ft (33.2 m) and a deck 203 ft wide.

Who owns Interstate 10 over W Covina Parkway?

It is owned by the State Highway Agency.