US Bridges

Interstate 210 over Bonnie Cove

Fair

Los Angeles County, California · 07-LA-210-R42.66-GDR · Structure no. 53 2025

Built
1970
55 years old
Condition
Fair
inspected February 2025
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
105 ft
1 main span
Daily traffic
256,000
2017 count
Owner
State
State Highway Agency

About this bridge

Interstate 210 over Bonnie Cove is a prestressed concrete box beam or girders - multiple carrying Interstate 210 over Bonnie Cove in Los Angeles County, California. It was built in 1970, so it is 55 years old, older 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 256,000 vehicles a day, projected to reach 414,347 by 2043. The structure is 105 ft (32 m) long and 148 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesInterstate 210
CrossesBonnie Cove
Location07-LA-210-R42.66-GDR
RouteInterstate 210
CountyLos Angeles County
StateCalifornia
Coordinates34.11739, -117.85526
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
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 inspectionFebruary 2025
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 geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42.1 US tons
Inventory rating28.9 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length105 ft (32 m)
Longest span103 ft (31.4 m)
Deck width148 ft (45.1 m)
Roadway width144 ft (43.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic256,000 (2017)
Projected traffic414,347 by 2043
Trucks0%
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 210 over Bonnie Cove built?

It was built in 1970, making it 55 years old in 2025.

What condition is Interstate 210 over Bonnie Cove 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 February 2025.

How much traffic does Interstate 210 over Bonnie Cove carry?

About 256,000 vehicles per day (2017 count).

How long is Interstate 210 over Bonnie Cove?

The structure is 105 ft (32 m) long with a longest span of 103 ft (31.4 m) and a deck 148 ft wide.

Who owns Interstate 210 over Bonnie Cove?

It is owned by the State Highway Agency.