US Bridges

Walnut ST over Live Oak Wash

Good

Los Angeles County, California · 0.1MI W/O Arrow HWY · Structure no. 53C1029

Built
1950
75 years old
Condition
Good
inspected October 2021
Type
Culvert
Concrete
Length
23 ft
1 main span
Daily traffic
667
2012 count
Owner
City
City or Municipal Highway Agency

About this bridge

Walnut ST over Live Oak Wash is a concrete culvert carrying Walnut ST over Live Oak Wash in Los Angeles County, California. It was built in 1950, so it is 75 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 667 vehicles a day, roughly 5% of them trucks, projected to reach 734 by 2041. The structure is 23 ft (7 m) long and 32 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesWalnut ST
CrossesLive Oak Wash
Location0.1MI W/O Arrow HWY
RouteCity Street 0
CountyLos Angeles County
StateCalifornia
Coordinates34.09789, -117.77552
Functional classUrban Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection9 ExcellentNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionOctober 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length23 ft (7 m)
Longest span21 ft (6.4 m)
Deck width32 ft (9.8 m)
Roadway width26 ft (7.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic667 (2012)
Projected traffic734 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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 Walnut ST over Live Oak Wash built?

It was built in 1950, making it 75 years old in 2025.

What condition is Walnut ST over Live Oak Wash 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 October 2021.

How much traffic does Walnut ST over Live Oak Wash carry?

About 667 vehicles per day (2012 count), of which roughly 5% are trucks.

How long is Walnut ST over Live Oak Wash?

The structure is 23 ft (7 m) long with a longest span of 21 ft (6.4 m) and a deck 32 ft wide.

Who owns Walnut ST over Live Oak Wash?

It is owned by the City or Municipal Highway Agency.