US Bridges

30th Street over East Side Canal

Fair

Kern County, California · West of Union Ave · Structure no. 50C0057

Built
1978
47 years old
Condition
Fair
inspected December 2024
Type
Culvert
Concrete Continuous
Length
22 ft
2 main spans
Daily traffic
2,309
2007 count
Owner
City
City or Municipal Highway Agency

About this bridge

30th Street over East Side Canal is a concrete continuous culvert carrying 30th Street over East Side Canal in Kern County, California. It was built in 1978, so it is 47 years old, younger 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 2,309 vehicles a day, roughly 2% of them trucks, projected to reach 3,854 by 2044. The structure is 22 ft (6.7 m) long and 56 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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Carries30th Street
CrossesEast Side Canal
LocationWest of Union Ave
RouteCity Street 0
CountyKern County
StateCalifornia
Coordinates35.38568, -119.00324
Functional classUrban Minor Arterial

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 inspectionDecember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadUnknown
Structure length22 ft (6.7 m)
Longest span10 ft (3 m)
Deck width56 ft (17 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,309 (2007)
Projected traffic3,854 by 2044
Trucks2%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 30th Street over East Side Canal built?

It was built in 1978, making it 47 years old in 2025.

What condition is 30th Street over East Side Canal 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 December 2024.

How much traffic does 30th Street over East Side Canal carry?

About 2,309 vehicles per day (2007 count), of which roughly 2% are trucks.

How long is 30th Street over East Side Canal?

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3 m) and a deck 56 ft wide.

Who owns 30th Street over East Side Canal?

It is owned by the City or Municipal Highway Agency.