US Bridges

N405-E10 Connector over Sepulveda Blvd

Good

Los Angeles County, California · 07-LA-405-29.42-LA · Structure no. 53 1638G

Built
1963
62 years old
Condition
Good
inspected April 2023
Type
Box Beam or Girders - Single or Spread
Concrete Continuous
Length
186 ft
3 main spans
Daily traffic
32,000
2019 count
Owner
State
State Highway Agency

About this bridge

N405-E10 Connector over Sepulveda Blvd is a concrete continuous box beam or girders - single or spread carrying N405-E10 Connector over Sepulveda Blvd in Los Angeles County, California. It was built in 1963, so it is 62 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 32,000 vehicles a day, roughly 2% of them trucks, projected to reach 48,682 by 2040. The structure is 186 ft (56.7 m) long and 34 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesN405-E10 Connector
CrossesSepulveda Blvd
Location07-LA-405-29.42-LA
RouteInterstate 405
CountyLos Angeles County
StateCalifornia
Coordinates34.03039, -118.43073
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 inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating41.8 US tons
Inventory rating32.2 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length186 ft (56.7 m)
Longest span108 ft (32.9 m)
Deck width34 ft (10.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic32,000 (2019)
Projected traffic48,682 by 2040
Trucks2%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 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 N405-E10 Connector over Sepulveda Blvd built?

It was built in 1963, making it 62 years old in 2025.

What condition is N405-E10 Connector over Sepulveda Blvd 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 April 2023.

How much traffic does N405-E10 Connector over Sepulveda Blvd carry?

About 32,000 vehicles per day (2019 count), of which roughly 2% are trucks.

How long is N405-E10 Connector over Sepulveda Blvd?

The structure is 186 ft (56.7 m) long with a longest span of 108 ft (32.9 m) and a deck 34 ft wide.

Who owns N405-E10 Connector over Sepulveda Blvd?

It is owned by the State Highway Agency.