US Bridges

State Route 204 over Airport Drive

Good

Kern County, California · 06-KER-204-6.70 · Structure no. 50 0475

Built
1994
31 years old
Condition
Good
inspected December 2021
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
192 ft
2 main spans
Daily traffic
38,000
2019 count
Owner
State
State Highway Agency

About this bridge

State Route 204 over Airport Drive is a prestressed concrete continuous box beam or girders - multiple carrying State Route 204 over Airport Drive in Kern County, California. It was built in 1994, so it is 31 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 38,000 vehicles a day, roughly 6% of them trucks, projected to reach 76,337 by 2041. The structure is 192 ft (58.5 m) long and 104 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesState Route 204
CrossesAirport Drive
Location06-KER-204-6.70
RouteState Highway 204
CountyKern County
StateCalifornia
Coordinates35.40209, -119.04105
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionDecember 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length192 ft (58.5 m)
Longest span96 ft (29.3 m)
Deck width104 ft (31.8 m)
Roadway width101 ft (30.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic38,000 (2019)
Projected traffic76,337 by 2041
Trucks6%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 State Route 204 over Airport Drive built?

It was built in 1994, making it 31 years old in 2025.

What condition is State Route 204 over Airport Drive 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 2021.

How much traffic does State Route 204 over Airport Drive carry?

About 38,000 vehicles per day (2019 count), of which roughly 6% are trucks.

How long is State Route 204 over Airport Drive?

The structure is 192 ft (58.5 m) long with a longest span of 96 ft (29.3 m) and a deck 104 ft wide.

Who owns State Route 204 over Airport Drive?

It is owned by the State Highway Agency.