US Bridges

The Old RD over Gavin Cyn Crk

Good

Los Angeles County, California · 0.1MI W/O I-5 Fwy · Structure no. 53C0392

Built
1928
97 years old, rebuilt 1952
Condition
Good
inspected April 2024
Type
Culvert
Concrete
Length
20 ft
2 main spans
Daily traffic
10,841
2017 count
Owner
County
County Highway Agency

About this bridge

The Old RD over Gavin Cyn Crk is a concrete culvert carrying The Old RD over Gavin Cyn Crk in Los Angeles County, California. It was built in 1928 and reconstructed in 1952, so it is 97 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 10,841 vehicles a day, roughly 2% of them trucks, projected to reach 12,467 by 2043. The structure is 20 ft (6.1 m) long and 190 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesThe Old RD
CrossesGavin Cyn Crk
Location0.1MI W/O I-5 Fwy
RouteCounty Highway 0
Coordinates34.3504, -118.54593
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
Channel and channel protection9 ExcellentNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
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
DeckNot applicable
Main spans2
Design loadUnknown
Structure length20 ft (6.1 m)
Longest span10 ft (3 m)
Deck width190 ft (57.9 m)
Roadway width116 ft (35.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,841 (2017)
Projected traffic12,467 by 2043
Trucks2%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 The Old RD over Gavin Cyn Crk built?

It was built in 1928, making it 97 years old in 2025. It was reconstructed in 1952.

What condition is The Old RD over Gavin 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 2024.

How much traffic does The Old RD over Gavin Cyn Crk carry?

About 10,841 vehicles per day (2017 count), of which roughly 2% are trucks.

How long is The Old RD over Gavin Cyn Crk?

The structure is 20 ft (6.1 m) long with a longest span of 10 ft (3 m) and a deck 190 ft wide.

Who owns The Old RD over Gavin Cyn Crk?

It is owned by the County Highway Agency.