US Bridges

U.S. Highway 101 over Whitsett Ave

Good

Los Angeles County, California · 07-LA-101-13.39-LA · Structure no. 53 1340

Built
1959
66 years old
Condition
Good
inspected May 2024
Type
Box Beam or Girders - Multiple
Concrete
Length
91 ft
1 main span
Daily traffic
175,000
2020 count
Owner
State
State Highway Agency

About this bridge

U.S. Highway 101 over Whitsett Ave is a concrete box beam or girders - multiple carrying U.S. Highway 101 over Whitsett Ave in Los Angeles County, California. It was built in 1959, so it is 66 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 175,000 vehicles a day, roughly 10% of them trucks, projected to reach 223,000 by 2045. The structure is 91 ft (27.7 m) long and 140 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesU.S. Highway 101
CrossesWhitsett Ave
Location07-LA-101-13.39-LA
RouteU.S. Route 101
Coordinates34.15689, -118.40507
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 inspectionMay 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110 US tons
Inventory rating72.9 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length91 ft (27.7 m)
Longest span87 ft (26.5 m)
Deck width140 ft (42.7 m)
Roadway width132 ft (40.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic175,000 (2020)
Projected traffic223,000 by 2045
Trucks10%
Lanes on structure10
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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 U.S. Highway 101 over Whitsett Ave built?

It was built in 1959, making it 66 years old in 2025.

What condition is U.S. Highway 101 over Whitsett 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 May 2024.

How much traffic does U.S. Highway 101 over Whitsett Ave carry?

About 175,000 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is U.S. Highway 101 over Whitsett Ave?

The structure is 91 ft (27.7 m) long with a longest span of 87 ft (26.5 m) and a deck 140 ft wide.

Who owns U.S. Highway 101 over Whitsett Ave?

It is owned by the State Highway Agency.