US Bridges

California Ave over Walnut Crk

Good

Los Angeles County, California · 100FT S/O W Covina Pkwy · Structure no. 53C0698

Built
1961
64 years old
Condition
Good
inspected November 2021
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
60 ft
1 main span
Daily traffic
7,440
2014 count
Owner
City
City or Municipal Highway Agency

About this bridge

California Ave over Walnut Crk is a prestressed concrete box beam or girders - multiple carrying California Ave over Walnut Crk in Los Angeles County, California. It was built in 1961, so it is 64 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 7,440 vehicles a day, projected to reach 8,556 by 2042. The structure is 60 ft (18.4 m) long and 59 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesCalifornia Ave
CrossesWalnut Crk
Location100FT S/O W Covina Pkwy
RouteCity Street 0Q947
CountyLos Angeles County
StateCalifornia
Coordinates34.06821, -117.93029
Functional classUrban Collector

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.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionNovember 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating75.7 US tons
Inventory rating45.3 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length60 ft (18.4 m)
Longest span58 ft (17.7 m)
Deck width59 ft (18.1 m)
Roadway width48 ft (14.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,440 (2014)
Projected traffic8,556 by 2042
Trucks0%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was California Ave over Walnut Crk built?

It was built in 1961, making it 64 years old in 2025.

What condition is California Ave over Walnut Crk 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 November 2021.

How much traffic does California Ave over Walnut Crk carry?

About 7,440 vehicles per day (2014 count).

How long is California Ave over Walnut Crk?

The structure is 60 ft (18.4 m) long with a longest span of 58 ft (17.7 m) and a deck 59 ft wide.

Who owns California Ave over Walnut Crk?

It is owned by the City or Municipal Highway Agency.