US Bridges

S101-N405 Connectr over I 405 & N101-S405 Ramp

Fair

Los Angeles County, California · 07-LA-101-17.14L-LA · Structure no. 53 1146F

Built
1958
67 years old
Condition
Fair
inspected March 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
202 ft
3 main spans
Daily traffic
35,000
2018 count
Owner
State
State Highway Agency

About this bridge

S101-N405 Connectr over I 405 & N101-S405 Ramp is a concrete continuous box beam or girders - multiple carrying S101-N405 Connectr over I 405 & N101-S405 Ramp in Los Angeles County, California. It was built in 1958, so it is 67 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 35,000 vehicles a day, roughly 8% of them trucks, projected to reach 52,000 by 2045. The structure is 202 ft (61.6 m) long and 25 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesS101-N405 Connectr
CrossesI 405 & N101-S405 Ramp
Location07-LA-101-17.14L-LA
RouteU.S. Route 101
CountyLos Angeles County
StateCalifornia
Coordinates34.15973, -118.46924
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2024
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 alignment8: Equal to present desirable criteria
Operating rating54.2 US tons
Inventory rating38.6 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length202 ft (61.6 m)
Longest span92 ft (28 m)
Deck width25 ft (7.7 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35,000 (2018)
Projected traffic52,000 by 2045
Trucks8%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 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 S101-N405 Connectr over I 405 & N101-S405 Ramp built?

It was built in 1958, making it 67 years old in 2025.

What condition is S101-N405 Connectr over I 405 & N101-S405 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 March 2024.

How much traffic does S101-N405 Connectr over I 405 & N101-S405 Ramp carry?

About 35,000 vehicles per day (2018 count), of which roughly 8% are trucks.

How long is S101-N405 Connectr over I 405 & N101-S405 Ramp?

The structure is 202 ft (61.6 m) long with a longest span of 92 ft (28 m) and a deck 25 ft wide.

Who owns S101-N405 Connectr over I 405 & N101-S405 Ramp?

It is owned by the State Highway Agency.