US Bridges

Churn Creek Road over Churn Creek

Fair

Shasta County, California · 1.2 MI No. of Knighton RD · Structure no. 06C0049

Built
1935
90 years old, rebuilt 1951
Condition
Fair
inspected May 2023
Type
Slab
Concrete Continuous
Length
87 ft
3 main spans
Daily traffic
2,770
2005 count
Owner
County
County Highway Agency

About this bridge

Churn Creek Road over Churn Creek is a concrete continuous slab carrying Churn Creek Road over Churn Creek in Shasta County, California. It was built in 1935 and reconstructed in 1951, so it is 90 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 2,770 vehicles a day, roughly 5% of them trucks, projected to reach 1,963 by 2043. The structure is 87 ft (26.5 m) long and 24 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesChurn Creek Road
CrossesChurn Creek
Location1.2 MI No. of Knighton RD
RouteCounty Highway 0
CountyShasta County
StateCalifornia
Coordinates40.52229, -122.33366
Functional classUrban Minor Arterial

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.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating69.3 US tons
Inventory rating41.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length87 ft (26.5 m)
Longest span29 ft (8.8 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,770 (2005)
Projected traffic1,963 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 Churn Creek Road over Churn Creek built?

It was built in 1935, making it 90 years old in 2025. It was reconstructed in 1951.

What condition is Churn Creek Road over Churn 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 May 2023.

How much traffic does Churn Creek Road over Churn Creek carry?

About 2,770 vehicles per day (2005 count), of which roughly 5% are trucks.

How long is Churn Creek Road over Churn Creek?

The structure is 87 ft (26.5 m) long with a longest span of 29 ft (8.8 m) and a deck 24 ft wide.

Who owns Churn Creek Road over Churn Creek?

It is owned by the County Highway Agency.