US Bridges

99-58E Connector over 58E Offramp to H ST

Good

Kern County, California · 06-KER-099-23.48-BKD · Structure no. 50 0519H

Built
2018
7 years old
Condition
Good
inspected October 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
570 ft
4 main spans
Daily traffic
36,500
2016 count
Owner
State
State Highway Agency

About this bridge

99-58E Connector over 58E Offramp to H ST is a prestressed concrete continuous box beam or girders - multiple carrying 99-58E Connector over 58E Offramp to H ST in Kern County, California. It was built in 2018, so it is 7 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 36,500 vehicles a day, roughly 29% of them trucks, projected to reach 51,178 by 2045. The structure is 570 ft (173.7 m) long and 61 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Carries99-58E Connector
Crosses58E Offramp to H ST
Location06-KER-099-23.48-BKD
RouteState Highway 99
Coordinates35.35204, -119.03497
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 inspectionOctober 2023
Inspection intervalevery 24 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

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHL 93
Structure length570 ft (173.7 m)
Longest span176 ft (53.6 m)
Deck width61 ft (18.6 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic36,500 (2016)
Projected traffic51,178 by 2045
Trucks29%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 99-58E Connector over 58E Offramp to H ST built?

It was built in 2018, making it 7 years old in 2025.

What condition is 99-58E Connector over 58E Offramp to H ST 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 99-58E Connector over 58E Offramp to H ST carry?

About 36,500 vehicles per day (2016 count), of which roughly 29% are trucks.

How long is 99-58E Connector over 58E Offramp to H ST?

The structure is 570 ft (173.7 m) long with a longest span of 176 ft (53.6 m) and a deck 61 ft wide.

Who owns 99-58E Connector over 58E Offramp to H ST?

It is owned by the State Highway Agency.