US Bridges

W90-N405 Connector over Slauson Ave

Good

Los Angeles County, California · 07-LA-090-2.62-CLC · Structure no. 53 1401F

Built
1968
57 years old
Condition
Good
inspected August 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
244 ft
4 main spans
Daily traffic
7,500
2015 count
Owner
State
State Highway Agency

About this bridge

W90-N405 Connector over Slauson Ave is a concrete continuous box beam or girders - multiple carrying W90-N405 Connector over Slauson Ave in Los Angeles County, California. It was built in 1968, so it is 57 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 7,500 vehicles a day, roughly 2% of them trucks, projected to reach 10,031 by 2042. The structure is 244 ft (74.4 m) long and 34 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesW90-N405 Connector
CrossesSlauson Ave
Location07-LA-090-2.62-CLC
RouteState Highway 90
CountyLos Angeles County
StateCalifornia
Coordinates33.98965, -118.40018
Functional classUrban Principal Arterial - Other Freeway or Expressway

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 inspectionAugust 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 alignment9: Superior to present desirable criteria
Operating rating48.2 US tons
Inventory rating34.3 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length244 ft (74.4 m)
Longest span79 ft (24.1 m)
Deck width34 ft (10.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,500 (2015)
Projected traffic10,031 by 2042
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 W90-N405 Connector over Slauson Ave built?

It was built in 1968, making it 57 years old in 2025.

What condition is W90-N405 Connector over Slauson Ave 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 August 2023.

How much traffic does W90-N405 Connector over Slauson Ave carry?

About 7,500 vehicles per day (2015 count), of which roughly 2% are trucks.

How long is W90-N405 Connector over Slauson Ave?

The structure is 244 ft (74.4 m) long with a longest span of 79 ft (24.1 m) and a deck 34 ft wide.

Who owns W90-N405 Connector over Slauson Ave?

It is owned by the State Highway Agency.