US Bridges

Lost Cyn RD over Sand Cyn Wash

Fair

Los Angeles County, California · 150FT W/O Sand Cyn · Structure no. 53C1024

Built
1960
65 years old
Condition
Fair
inspected January 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
50 ft
1 main span
Daily traffic
3,100
2014 count
Owner
City
City or Municipal Highway Agency

About this bridge

Lost Cyn RD over Sand Cyn Wash is a prestressed concrete box beam or girders - multiple carrying Lost Cyn RD over Sand Cyn Wash in Los Angeles County, California. It was built in 1960, so it is 65 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 6 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 3,100 vehicles a day, roughly 1% of them trucks, projected to reach 3,700 by 2044. The structure is 50 ft (15.2 m) long and 45 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesLost Cyn RD
CrossesSand Cyn Wash
Location150FT W/O Sand Cyn
RouteCity Street 0
Coordinates34.41984, -118.42441
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.7 US tons
Inventory rating34 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length50 ft (15.2 m)
Longest span48 ft (14.5 m)
Deck width45 ft (13.6 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,100 (2014)
Projected traffic3,700 by 2044
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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 Lost Cyn RD over Sand Cyn Wash built?

It was built in 1960, making it 65 years old in 2025.

What condition is Lost Cyn RD over Sand Cyn 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 January 2024.

How much traffic does Lost Cyn RD over Sand Cyn Wash carry?

About 3,100 vehicles per day (2014 count), of which roughly 1% are trucks.

How long is Lost Cyn RD over Sand Cyn Wash?

The structure is 50 ft (15.2 m) long with a longest span of 48 ft (14.5 m) and a deck 45 ft wide.

Who owns Lost Cyn RD over Sand Cyn Wash?

It is owned by the City or Municipal Highway Agency.