US Bridges

Old River RD over Kern River Canal

Good

Kern County, California · South of Stockdale Hghwy · Structure no. 50C0317

Built
1987
38 years old
Condition
Good
inspected December 2024
Type
Culvert
Concrete Continuous
Length
24 ft
2 main spans
Daily traffic
20,300
2011 count
Owner
City
City or Municipal Highway Agency

About this bridge

Old River RD over Kern River Canal is a concrete continuous culvert carrying Old River RD over Kern River Canal in Kern County, California. It was built in 1987, so it is 38 years old, younger 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 20,300 vehicles a day, roughly 5% of them trucks, projected to reach 54,906 by 2042. The structure is 24 ft (7.3 m) long and 126 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesOld River RD
CrossesKern River Canal
LocationSouth of Stockdale Hghwy
RouteCity Street 0
Coordinates35.35296, -119.11451
Functional classUrban Other Principal Arterial

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 protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to 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
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length24 ft (7.3 m)
Longest span11 ft (3.4 m)
Deck width126 ft (38.5 m)
Roadway width108 ft (32.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,300 (2011)
Projected traffic54,906 by 2042
Trucks5%
Lanes on structure9
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Old River RD over Kern River Canal built?

It was built in 1987, making it 38 years old in 2025.

What condition is Old River RD over Kern River Canal 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 December 2024.

How much traffic does Old River RD over Kern River Canal carry?

About 20,300 vehicles per day (2011 count), of which roughly 5% are trucks.

How long is Old River RD over Kern River Canal?

The structure is 24 ft (7.3 m) long with a longest span of 11 ft (3.4 m) and a deck 126 ft wide.

Who owns Old River RD over Kern River Canal?

It is owned by the City or Municipal Highway Agency.