US Bridges

21st Ave over Kings River (clarks Fk)

Fair

Kings County, California · S/O Fairfax Ave · Structure no. 45C0095

Built
1976
49 years old
Condition
Fair
inspected September 2024
Type
Slab
Concrete Continuous
Length
194 ft
9 main spans
Daily traffic
500
2018 count
Owner
County
County Highway Agency

About this bridge

21st Ave over Kings River (clarks Fk) is a concrete continuous slab carrying 21st Ave over Kings River (clarks Fk) in Kings County, California. It was built in 1976, so it is 49 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 500 vehicles a day, roughly 10% of them trucks, projected to reach 529 by 2042. The structure is 194 ft (59.1 m) long and 32 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
Carries21st Ave
CrossesKings River (clarks Fk)
LocationS/O Fairfax Ave
RouteCounty Highway 0
CountyKings County
StateCalifornia
Coordinates36.35096, -119.83393
Functional classRural Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65 US tons
Inventory rating38.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans9
Design loadHS 20
Structure length194 ft (59.1 m)
Longest span28 ft (8.5 m)
Deck width32 ft (9.9 m)
Roadway width32 ft (9.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2018)
Projected traffic529 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was 21st Ave over Kings River (clarks Fk) built?

It was built in 1976, making it 49 years old in 2025.

What condition is 21st Ave over Kings River (clarks Fk) 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 September 2024.

How much traffic does 21st Ave over Kings River (clarks Fk) carry?

About 500 vehicles per day (2018 count), of which roughly 10% are trucks.

How long is 21st Ave over Kings River (clarks Fk)?

The structure is 194 ft (59.1 m) long with a longest span of 28 ft (8.5 m) and a deck 32 ft wide.

Who owns 21st Ave over Kings River (clarks Fk)?

It is owned by the County Highway Agency.