US Bridges

Interstate 405 over Lakewood Blvd

Fair

Los Angeles County, California · 07-LA-405-3.30-LBCH · Structure no. 53 1196

Built
1964
61 years old
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
236 ft
4 main spans
Daily traffic
255,000
2021 count
Owner
State
State Highway Agency

About this bridge

Interstate 405 over Lakewood Blvd is a prestressed concrete stringer/multi-beam or girder carrying Interstate 405 over Lakewood Blvd in Los Angeles County, California. It was built in 1964, so it is 61 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 6 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 255,000 vehicles a day, roughly 5% of them trucks, projected to reach 323,577 by 2042. The structure is 236 ft (71.9 m) long and 182 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesInterstate 405
CrossesLakewood Blvd
Location07-LA-405-3.30-LBCH
RouteInterstate 405
Coordinates33.80587, -118.14222
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length236 ft (71.9 m)
Longest span67 ft (20.4 m)
Deck width182 ft (55.5 m)
Roadway width166 ft (50.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic255,000 (2021)
Projected traffic323,577 by 2042
Trucks5%
Lanes on structure13
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 405 over Lakewood Blvd built?

It was built in 1964, making it 61 years old in 2025.

What condition is Interstate 405 over Lakewood 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 January 2025.

How much traffic does Interstate 405 over Lakewood Blvd carry?

About 255,000 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is Interstate 405 over Lakewood Blvd?

The structure is 236 ft (71.9 m) long with a longest span of 67 ft (20.4 m) and a deck 182 ft wide.

Who owns Interstate 405 over Lakewood Blvd?

It is owned by the State Highway Agency.