US Bridges

Greenleaf Cyn RD over Greenleaf Cyn Crk

Good

Los Angeles County, California · 0.4MI W/O Topanga Cyn Bl · Structure no. 53C0995

Built
1942
83 years old, rebuilt 1966
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
40 ft
3 main spans
Daily traffic
204
2017 count
Owner
County
County Highway Agency

About this bridge

Greenleaf Cyn RD over Greenleaf Cyn Crk is a wood or timber stringer/multi-beam or girder carrying Greenleaf Cyn RD over Greenleaf Cyn Crk in Los Angeles County, California. It was built in 1942 and reconstructed in 1966, so it is 83 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 204 vehicles a day, projected to reach 204 by 2041. The structure is 40 ft (12.2 m) long and 13 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesGreenleaf Cyn RD
CrossesGreenleaf Cyn Crk
Location0.4MI W/O Topanga Cyn Bl
RouteCounty Highway 0
Coordinates34.0992, -118.60518
Functional classRural Local

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating46.7 US tons
Inventory rating34 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadH 20
Structure length40 ft (12.2 m)
Longest span13 ft (4 m)
Deck width13 ft (4 m)
Roadway width12 ft (3.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic204 (2017)
Projected traffic204 by 2041
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Greenleaf Cyn RD over Greenleaf Cyn Crk built?

It was built in 1942, making it 83 years old in 2025. It was reconstructed in 1966.

What condition is Greenleaf Cyn RD over Greenleaf Cyn 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 April 2023.

How much traffic does Greenleaf Cyn RD over Greenleaf Cyn Crk carry?

About 204 vehicles per day (2017 count).

How long is Greenleaf Cyn RD over Greenleaf Cyn Crk?

The structure is 40 ft (12.2 m) long with a longest span of 13 ft (4 m) and a deck 13 ft wide.

Who owns Greenleaf Cyn RD over Greenleaf Cyn Crk?

It is owned by the County Highway Agency.