US Bridges

Whisler Road over Poso Creek

Fair

Kern County, California · 2.9 MI E State HWY 43 · Structure no. 50C0118

Built
1958
67 years old
Condition
Fair
inspected March 2024
Type
Slab
Concrete Continuous
Length
198 ft
8 main spans
Daily traffic
950
2007 count
Owner
County
County Highway Agency

About this bridge

Whisler Road over Poso Creek is a concrete continuous slab carrying Whisler Road over Poso Creek in Kern County, California. It was built in 1958, so it is 67 years old, older 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 950 vehicles a day, roughly 10% of them trucks, projected to reach 1,199 by 2046. The structure is 198 ft (60.3 m) long and 31 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

Open in Google Maps
CarriesWhisler Road
CrossesPoso Creek
Location2.9 MI E State HWY 43
RouteCounty Highway 0
CountyKern County
StateCalifornia
Coordinates35.64523, -119.27927
Functional classRural Minor Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating27.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans8
Design loadHS 20
Structure length198 ft (60.3 m)
Longest span26 ft (7.9 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic950 (2007)
Projected traffic1,199 by 2046
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Whisler Road over Poso Creek built?

It was built in 1958, making it 67 years old in 2025.

What condition is Whisler Road over Poso Creek 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 March 2024.

How much traffic does Whisler Road over Poso Creek carry?

About 950 vehicles per day (2007 count), of which roughly 10% are trucks.

How long is Whisler Road over Poso Creek?

The structure is 198 ft (60.3 m) long with a longest span of 26 ft (7.9 m) and a deck 31 ft wide.

Who owns Whisler Road over Poso Creek?

It is owned by the County Highway Agency.