US Bridges

E Frk RD over Susana Cyn Crk

Fair

Los Angeles County, California · 2.2MI E/O San G Cyn RD · Structure no. 53C0447

Built
1942
83 years old, rebuilt 1968
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
84 ft
2 main spans
Daily traffic
2,000
2017 count
Owner
County
County Highway Agency

About this bridge

E Frk RD over Susana Cyn Crk is a steel stringer/multi-beam or girder carrying E Frk RD over Susana Cyn Crk in Los Angeles County, California. It was built in 1942 and reconstructed in 1968, 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 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 2,000 vehicles a day, roughly 1% of them trucks, projected to reach 2,200 by 2041. The structure is 84 ft (25.6 m) long and 31 ft wide. If it were closed, the detour would be 24.2 mi (39 km).

Location

Open in Google Maps
CarriesE Frk RD
CrossesSusana Cyn Crk
Location2.2MI E/O San G Cyn RD
RouteCounty Highway 0W480
CountyLos Angeles County
StateCalifornia
Coordinates34.23764, -117.81954
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 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 adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating110 US tons
Inventory rating89.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length84 ft (25.6 m)
Longest span39 ft (11.9 m)
Deck width31 ft (9.3 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,000 (2017)
Projected traffic2,200 by 2041
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.2 mi (39 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 E Frk RD over Susana Cyn Crk built?

It was built in 1942, making it 83 years old in 2025. It was reconstructed in 1968.

What condition is E Frk RD over Susana Cyn Crk 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 October 2023.

How much traffic does E Frk RD over Susana Cyn Crk carry?

About 2,000 vehicles per day (2017 count), of which roughly 1% are trucks.

How long is E Frk RD over Susana Cyn Crk?

The structure is 84 ft (25.6 m) long with a longest span of 39 ft (11.9 m) and a deck 31 ft wide.

Who owns E Frk RD over Susana Cyn Crk?

It is owned by the County Highway Agency.