US Bridges

Cloverleaf DR over Walnut Crk Wash

Fair

Los Angeles County, California · 0.8MI N/O Valley Blvd · Structure no. 53C1856

Built
1985
40 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
423 ft
7 main spans
Daily traffic
303
2017 count
Owner
City
City or Municipal Highway Agency

About this bridge

Cloverleaf DR over Walnut Crk Wash is a prestressed concrete stringer/multi-beam or girder carrying Cloverleaf DR over Walnut Crk Wash in Los Angeles County, California. It was built in 1985, so it is 40 years old, younger 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 303 vehicles a day, roughly 5% of them trucks, projected to reach 303 by 2041. The structure is 423 ft (128.8 m) long and 37 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesCloverleaf DR
CrossesWalnut Crk Wash
Location0.8MI N/O Valley Blvd
RouteCity Street 0
CountyLos Angeles County
StateCalifornia
Coordinates34.06021, -118.00203
Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating62.5 US tons
Inventory rating37.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans7
Design loadHS 20
Structure length423 ft (128.8 m)
Longest span63 ft (19.2 m)
Deck width37 ft (11.2 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic303 (2017)
Projected traffic303 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed123.7 mi (199 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 Cloverleaf DR over Walnut Crk Wash built?

It was built in 1985, making it 40 years old in 2025.

What condition is Cloverleaf DR over Walnut Crk Wash 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 July 2023.

How much traffic does Cloverleaf DR over Walnut Crk Wash carry?

About 303 vehicles per day (2017 count), of which roughly 5% are trucks.

How long is Cloverleaf DR over Walnut Crk Wash?

The structure is 423 ft (128.8 m) long with a longest span of 63 ft (19.2 m) and a deck 37 ft wide.

Who owns Cloverleaf DR over Walnut Crk Wash?

It is owned by the City or Municipal Highway Agency.