US Bridges

7th Standard RD WB over State Route 99

Good

Kern County, California · 06-KER-099-R30.54 · Structure no. 50 0277L

Built
2010
15 years old
Condition
Good
inspected October 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
366 ft
4 main spans
Daily traffic
10,881
2014 count
Owner
State
State Highway Agency

About this bridge

7th Standard RD WB over State Route 99 is a prestressed concrete continuous box beam or girders - multiple carrying 7th Standard RD WB over State Route 99 in Kern County, California. It was built in 2010, so it is 15 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 10,881 vehicles a day, roughly 15% of them trucks, projected to reach 17,343 by 2045. The structure is 366 ft (111.5 m) long and 51 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Carries7th Standard RD WB
CrossesState Route 99
Location06-KER-099-R30.54
RouteCounty Highway 0
Coordinates35.4414, -119.08477
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length366 ft (111.5 m)
Longest span125 ft (38 m)
Deck width51 ft (15.5 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,881 (2014)
Projected traffic17,343 by 2045
Trucks15%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed8.7 mi (14 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 7th Standard RD WB over State Route 99 built?

It was built in 2010, making it 15 years old in 2025.

What condition is 7th Standard RD WB over State Route 99 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 October 2023.

How much traffic does 7th Standard RD WB over State Route 99 carry?

About 10,881 vehicles per day (2014 count), of which roughly 15% are trucks.

How long is 7th Standard RD WB over State Route 99?

The structure is 366 ft (111.5 m) long with a longest span of 125 ft (38 m) and a deck 51 ft wide.

Who owns 7th Standard RD WB over State Route 99?

It is owned by the State Highway Agency.