US Bridges

Perkins Ave over State Route 99

Fair

Kern County, California · 06-KER-099-49.95-MCF · Structure no. 50 0225

Built
1963
62 years old
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
237 ft
3 main spans
Daily traffic
440
2007 count
Owner
State
State Highway Agency

About this bridge

Perkins Ave over State Route 99 is a prestressed concrete continuous stringer/multi-beam or girder carrying Perkins Ave over State Route 99 in Kern County, California. It was built in 1963, so it is 62 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 5 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 440 vehicles a day, roughly 15% of them trucks, projected to reach 1,054 by 2046. The structure is 237 ft (72.2 m) long and 48 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesPerkins Ave
CrossesState Route 99
Location06-KER-099-49.95-MCF
RouteCity Street 0
Coordinates35.68258, -119.22902
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating38.3 US tons
Inventory rating29.3 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3 (+2 approach)
Design loadHS 20 + Mod
Structure length237 ft (72.2 m)
Longest span59 ft (18 m)
Deck width48 ft (14.7 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic440 (2007)
Projected traffic1,054 by 2046
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

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 Perkins Ave over State Route 99 built?

It was built in 1963, making it 62 years old in 2025.

What condition is Perkins Ave over State Route 99 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 March 2024.

How much traffic does Perkins Ave over State Route 99 carry?

About 440 vehicles per day (2007 count), of which roughly 15% are trucks.

How long is Perkins Ave over State Route 99?

The structure is 237 ft (72.2 m) long with a longest span of 59 ft (18 m) and a deck 48 ft wide.

Who owns Perkins Ave over State Route 99?

It is owned by the State Highway Agency.