US Bridges

SR 178 over SR 178 Spur WB\24th ST

Good

Kern County, California · 06-KER-178-R1.90-BKD · Structure no. 50 0327

Built
1967
58 years old
Condition
Good
inspected November 2022
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
148 ft
3 main spans
Daily traffic
51,000
2009 count
Owner
State
State Highway Agency

About this bridge

SR 178 over SR 178 Spur WB\24th ST is a concrete continuous box beam or girders - multiple carrying SR 178 over SR 178 Spur WB\24th ST in Kern County, California. It was built in 1967, so it is 58 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 51,000 vehicles a day, roughly 6% of them trucks, projected to reach 148,874 by 2044. The structure is 148 ft (45.1 m) long and 136 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSR 178
CrossesSR 178 Spur WB\24th ST
Location06-KER-178-R1.90-BKD
RouteState Highway 178
Coordinates35.38125, -119.01179
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 inspectionNovember 2022
Inspection intervalevery 48 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 rating82.5 US tons
Inventory rating49.6 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length148 ft (45.1 m)
Longest span52 ft (15.8 m)
Deck width136 ft (41.6 m)
Roadway width133 ft (40.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic51,000 (2009)
Projected traffic148,874 by 2044
Trucks6%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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 SR 178 over SR 178 Spur WB\24th ST built?

It was built in 1967, making it 58 years old in 2025.

What condition is SR 178 over SR 178 Spur WB\24th 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 November 2022.

How much traffic does SR 178 over SR 178 Spur WB\24th ST carry?

About 51,000 vehicles per day (2009 count), of which roughly 6% are trucks.

How long is SR 178 over SR 178 Spur WB\24th ST?

The structure is 148 ft (45.1 m) long with a longest span of 52 ft (15.8 m) and a deck 136 ft wide.

Who owns SR 178 over SR 178 Spur WB\24th ST?

It is owned by the State Highway Agency.