US Bridges

Willow Springs RD over State Route 58

Good

Kern County, California · 09-KER-058-R95.21 · Structure no. 50 0338

Built
1970
55 years old
Condition
Good
inspected May 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
190 ft
2 main spans
Daily traffic
2,800
2016 count
Owner
State
State Highway Agency

About this bridge

Willow Springs RD over State Route 58 is a concrete continuous box beam or girders - multiple carrying Willow Springs RD over State Route 58 in Kern County, California. It was built in 1970, so it is 55 years old, older 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 2,800 vehicles a day, roughly 10% of them trucks, projected to reach 4,118 by 2040. The structure is 190 ft (57.9 m) long and 34 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesWillow Springs RD
CrossesState Route 58
Location09-KER-058-R95.21
RouteCounty Highway 0W264
Coordinates35.1205, -118.39656
Functional classRural Major Collector

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 inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.9 US tons
Inventory rating42.5 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length190 ft (57.9 m)
Longest span94 ft (28.7 m)
Deck width34 ft (10.4 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,800 (2016)
Projected traffic4,118 by 2040
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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 Willow Springs RD over State Route 58 built?

It was built in 1970, making it 55 years old in 2025.

What condition is Willow Springs RD 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 May 2023.

How much traffic does Willow Springs RD over State Route 58 carry?

About 2,800 vehicles per day (2016 count), of which roughly 10% are trucks.

How long is Willow Springs RD over State Route 58?

The structure is 190 ft (57.9 m) long with a longest span of 94 ft (28.7 m) and a deck 34 ft wide.

Who owns Willow Springs RD over State Route 58?

It is owned by the State Highway Agency.