US Bridges

W118-S405 Connectr over I 405 SR 118 Chatsworth

Fair

Los Angeles County, California · 07-LA-118-R9.83-LA · Structure no. 53 2212F

Built
1977
48 years old
Condition
Fair
inspected February 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
1,041 ft
6 main spans
Daily traffic
28,365
2020 count
Owner
State
State Highway Agency

About this bridge

W118-S405 Connectr over I 405 SR 118 Chatsworth is a prestressed concrete continuous box beam or girders - multiple carrying W118-S405 Connectr over I 405 SR 118 Chatsworth in Los Angeles County, California. It was built in 1977, so it is 48 years old, younger 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 28,365 vehicles a day, roughly 2% of them trucks, projected to reach 35,802 by 2046. The structure is 1,041 ft (317.3 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesW118-S405 Connectr
CrossesI 405 SR 118 Chatsworth
Location07-LA-118-R9.83-LA
RouteState Highway 118
CountyLos Angeles County
StateCalifornia
Coordinates34.26436, -118.47273
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 inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating31.4 US tons
Inventory rating24.3 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length1,041 ft (317.3 m)
Longest span185 ft (56.4 m)
Deck width42 ft (12.8 m)
Roadway width38 ft (11.7 m)
Vertical clearance over deck17 ft (5.1 m)

Traffic and service

Average daily traffic28,365 (2020)
Projected traffic35,802 by 2046
Trucks2%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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 W118-S405 Connectr over I 405 SR 118 Chatsworth built?

It was built in 1977, making it 48 years old in 2025.

What condition is W118-S405 Connectr over I 405 SR 118 Chatsworth 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 February 2024.

How much traffic does W118-S405 Connectr over I 405 SR 118 Chatsworth carry?

About 28,365 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is W118-S405 Connectr over I 405 SR 118 Chatsworth?

The structure is 1,041 ft (317.3 m) long with a longest span of 185 ft (56.4 m) and a deck 42 ft wide.

Who owns W118-S405 Connectr over I 405 SR 118 Chatsworth?

It is owned by the State Highway Agency.