US Bridges

Gird RD over Live Oak Canyon

Fair

San Diego County, California · 1.7MI N/O Route 76 · Structure no. 57C0379

Built
1940
85 years old
Condition
Fair
inspected July 2023
Type
Culvert
Concrete
Length
78 ft
5 main spans
Daily traffic
3,259
2023 count
Owner
County
County Highway Agency

About this bridge

Gird RD over Live Oak Canyon is a concrete culvert carrying Gird RD over Live Oak Canyon in San Diego County, California. It was built in 1940, so it is 85 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 3,259 vehicles a day, roughly 2% of them trucks, projected to reach 4,777 by 2043. The structure is 78 ft (23.8 m) long and 25 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesGird RD
CrossesLive Oak Canyon
Location1.7MI N/O Route 76
RouteCounty Highway 0
CountySan Diego County
StateCalifornia
Coordinates33.33828, -117.18914
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating30 US tons
Inventory rating17.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadH 20
Structure length78 ft (23.8 m)
Longest span10 ft (3 m)
Deck width25 ft (7.7 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,259 (2023)
Projected traffic4,777 by 2043
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.7 mi (6 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 Gird RD over Live Oak Canyon built?

It was built in 1940, making it 85 years old in 2025.

What condition is Gird RD over Live Oak Canyon 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 Gird RD over Live Oak Canyon carry?

About 3,259 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is Gird RD over Live Oak Canyon?

The structure is 78 ft (23.8 m) long with a longest span of 10 ft (3 m) and a deck 25 ft wide.

Who owns Gird RD over Live Oak Canyon?

It is owned by the County Highway Agency.