US Bridges

N405-N710 Connecto over Appian WAY-N405 On-Ramp

Fair

Los Angeles County, California · 07-LA-405-7.20-LBCH · Structure no. 53 1476G

Built
1963
62 years old
Condition
Fair
inspected July 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
130 ft
3 main spans
Daily traffic
24,200
2019 count
Owner
State
State Highway Agency

About this bridge

N405-N710 Connecto over Appian WAY-N405 On-Ramp is a concrete continuous box beam or girders - multiple carrying N405-N710 Connecto over Appian WAY-N405 On-Ramp 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 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 24,200 vehicles a day, roughly 2% of them trucks, projected to reach 31,664 by 2046. The structure is 130 ft (39.6 m) long and 40 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesN405-N710 Connecto
CrossesAppian WAY-N405 On-Ramp
Location07-LA-405-7.20-LBCH
RouteInterstate 405
CountyLos Angeles County
StateCalifornia
Coordinates33.82486, -118.20095
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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionJuly 2024
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 alignment9: Superior to present desirable criteria
Operating rating44.6 US tons
Inventory rating34.3 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length130 ft (39.6 m)
Longest span60 ft (18.3 m)
Deck width40 ft (12.1 m)
Roadway width37 ft (11.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,200 (2019)
Projected traffic31,664 by 2046
Trucks2%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed5 mi (8 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 N405-N710 Connecto over Appian WAY-N405 On-Ramp built?

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

What condition is N405-N710 Connecto over Appian WAY-N405 On-Ramp 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 July 2024.

How much traffic does N405-N710 Connecto over Appian WAY-N405 On-Ramp carry?

About 24,200 vehicles per day (2019 count), of which roughly 2% are trucks.

How long is N405-N710 Connecto over Appian WAY-N405 On-Ramp?

The structure is 130 ft (39.6 m) long with a longest span of 60 ft (18.3 m) and a deck 40 ft wide.

Who owns N405-N710 Connecto over Appian WAY-N405 On-Ramp?

It is owned by the State Highway Agency.