US Bridges

LAKEWOOD-N405 O.Rp over Lakewood Bl N405 Offramp

Good

Los Angeles County, California · 07-LA-405-3.20-LBCH · Structure no. 53 1481G

Built
1964
61 years old
Condition
Good
inspected January 2025
Type
Tee Beam
Concrete Continuous
Length
136 ft
3 main spans
Daily traffic
10,000
2024 count
Owner
State
State Highway Agency

About this bridge

LAKEWOOD-N405 O.Rp over Lakewood Bl N405 Offramp is a concrete continuous tee beam carrying LAKEWOOD-N405 O.Rp over Lakewood Bl N405 Offramp 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 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 10,000 vehicles a day, roughly 4% of them trucks, projected to reach 15,820 by 2046. The structure is 136 ft (41.5 m) long and 29 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesLAKEWOOD-N405 O.Rp
CrossesLakewood Bl N405 Offramp
Location07-LA-405-3.20-LBCH
RouteInterstate 405
Coordinates33.80564, -118.14058
Functional classUrban Principal Arterial - Interstate

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 inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating62.9 US tons
Inventory rating35.7 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length136 ft (41.5 m)
Longest span54 ft (16.5 m)
Deck width29 ft (8.7 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,000 (2024)
Projected traffic15,820 by 2046
Trucks4%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate 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 LAKEWOOD-N405 O.Rp over Lakewood Bl N405 Offramp built?

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

What condition is LAKEWOOD-N405 O.Rp over Lakewood Bl N405 Offramp 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 January 2025.

How much traffic does LAKEWOOD-N405 O.Rp over Lakewood Bl N405 Offramp carry?

About 10,000 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is LAKEWOOD-N405 O.Rp over Lakewood Bl N405 Offramp?

The structure is 136 ft (41.5 m) long with a longest span of 54 ft (16.5 m) and a deck 29 ft wide.

Who owns LAKEWOOD-N405 O.Rp over Lakewood Bl N405 Offramp?

It is owned by the State Highway Agency.