US Bridges

S99-E58 Connector over SR 58 SR 99 & Wible RD

Fair

Kern County, California · 06-KER-099-23.49-BKD · Structure no. 50 0429F

Built
1976
49 years old
Condition
Fair
inspected October 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
1,390 ft
8 main spans
Daily traffic
16,000
2018 count
Owner
State
State Highway Agency

About this bridge

S99-E58 Connector over SR 58 SR 99 & Wible RD is a prestressed concrete continuous box beam or girders - multiple carrying S99-E58 Connector over SR 58 SR 99 & Wible RD in Kern 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 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 16,000 vehicles a day, roughly 8% of them trucks, projected to reach 20,403 by 2045. The structure is 1,390 ft (423.7 m) long and 42 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesS99-E58 Connector
CrossesSR 58 SR 99 & Wible RD
Location06-KER-099-23.49-BKD
RouteState Highway 99
CountyKern County
StateCalifornia
Coordinates35.35233, -119.03692
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2023
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 geometry9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating110 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans8
Design loadHS 20 + Mod
Structure length1,390 ft (423.7 m)
Longest span210 ft (63.9 m)
Deck width42 ft (12.8 m)
Roadway width38 ft (11.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,000 (2018)
Projected traffic20,403 by 2045
Trucks8%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate 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 S99-E58 Connector over SR 58 SR 99 & Wible RD built?

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

What condition is S99-E58 Connector over SR 58 SR 99 & Wible RD 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 October 2023.

How much traffic does S99-E58 Connector over SR 58 SR 99 & Wible RD carry?

About 16,000 vehicles per day (2018 count), of which roughly 8% are trucks.

How long is S99-E58 Connector over SR 58 SR 99 & Wible RD?

The structure is 1,390 ft (423.7 m) long with a longest span of 210 ft (63.9 m) and a deck 42 ft wide.

Who owns S99-E58 Connector over SR 58 SR 99 & Wible RD?

It is owned by the State Highway Agency.