US Bridges

Wilshire Blvd over Bonsall Ave

Fair

Los Angeles County, California · 0.3MI W/O I-405 Fwy · Structure no. 53C0168

Built
1957
68 years old
Condition
Fair
inspected January 2025
Type
Box Beam or Girders - Multiple
Concrete
Length
64 ft
1 main span
Daily traffic
99,168
2015 count
Owner
County
County Highway Agency

About this bridge

Wilshire Blvd over Bonsall Ave is a concrete box beam or girders - multiple carrying Wilshire Blvd over Bonsall Ave in Los Angeles County, California. It was built in 1957, so it is 68 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 99,168 vehicles a day, roughly 2% of them trucks, projected to reach 119,001 by 2045. The structure is 64 ft (19.5 m) long and 143 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesWilshire Blvd
CrossesBonsall Ave
Location0.3MI W/O I-405 Fwy
RouteCounty Highway 0
CountyLos Angeles County
StateCalifornia
Coordinates34.05434, -118.45505
Functional classUrban Other Principal Arterial

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 inspectionJanuary 2025
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 geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37.5 US tons
Inventory rating22.5 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length64 ft (19.5 m)
Longest span62 ft (18.9 m)
Deck width143 ft (43.6 m)
Roadway width109 ft (33.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic99,168 (2015)
Projected traffic119,001 by 2045
Trucks2%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Wilshire Blvd over Bonsall Ave built?

It was built in 1957, making it 68 years old in 2025.

What condition is Wilshire Blvd over Bonsall Ave 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 January 2025.

How much traffic does Wilshire Blvd over Bonsall Ave carry?

About 99,168 vehicles per day (2015 count), of which roughly 2% are trucks.

How long is Wilshire Blvd over Bonsall Ave?

The structure is 64 ft (19.5 m) long with a longest span of 62 ft (18.9 m) and a deck 143 ft wide.

Who owns Wilshire Blvd over Bonsall Ave?

It is owned by the County Highway Agency.