US Bridges

Business Route 58 over State Route 58

Good

Kern County, California · 09-KER-058-M108.90 · Structure no. 50 0496

Built
2003
22 years old
Condition
Good
inspected June 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
248 ft
2 main spans
Daily traffic
4,000
2018 count
Owner
State
State Highway Agency

About this bridge

Business Route 58 over State Route 58 is a prestressed concrete continuous box beam or girders - multiple carrying Business Route 58 over State Route 58 in Kern County, California. It was built in 2003, so it is 22 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 4,000 vehicles a day, roughly 35% of them trucks, projected to reach 5,780 by 2040. The structure is 248 ft (75.7 m) long and 92 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesBusiness Route 58
CrossesState Route 58
Location09-KER-058-M108.90
RouteCounty Highway 0
Coordinates35.11412, -118.17904
Functional classRural Minor 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 inspectionJune 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 rating55 US tons
Inventory rating38.6 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length248 ft (75.7 m)
Longest span125 ft (38 m)
Deck width92 ft (28.1 m)
Roadway width89 ft (27 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,000 (2018)
Projected traffic5,780 by 2040
Trucks35%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 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 Business Route 58 over State Route 58 built?

It was built in 2003, making it 22 years old in 2025.

What condition is Business Route 58 over State Route 58 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 June 2023.

How much traffic does Business Route 58 over State Route 58 carry?

About 4,000 vehicles per day (2018 count), of which roughly 35% are trucks.

How long is Business Route 58 over State Route 58?

The structure is 248 ft (75.7 m) long with a longest span of 125 ft (38 m) and a deck 92 ft wide.

Who owns Business Route 58 over State Route 58?

It is owned by the State Highway Agency.