US Bridges

Ashby RD over Churn Creek

Fair

Shasta County, California · 0.1 MI NE Pine Grove · Structure no. 06C0268

Built
1965
60 years old, rebuilt 1973
Condition
Fair
inspected July 2023
Type
Slab
Concrete Continuous
Length
61 ft
2 main spans
Daily traffic
1,500
1998 count
Owner
City
City or Municipal Highway Agency

About this bridge

Ashby RD over Churn Creek is a concrete continuous slab carrying Ashby RD over Churn Creek in Shasta County, California. It was built in 1965 and reconstructed in 1973, so it is 60 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 1,500 vehicles a day, roughly 10% of them trucks, projected to reach 3,227 by 2042. The structure is 61 ft (18.6 m) long and 35 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesAshby RD
CrossesChurn Creek
Location0.1 MI NE Pine Grove
RouteCity Street 0
CountyShasta County
StateCalifornia
Coordinates40.66497, -122.38678
Functional classUrban 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.
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 inspectionJuly 2023
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 alignment6: Equal to present minimum criteria
Operating rating39.2 US tons
Inventory rating23.6 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length61 ft (18.6 m)
Longest span30 ft (9.1 m)
Deck width35 ft (10.7 m)
Roadway width33 ft (10 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,500 (1998)
Projected traffic3,227 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Ashby RD over Churn Creek built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 1973.

What condition is Ashby RD 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 July 2023.

How much traffic does Ashby RD over Churn Creek carry?

About 1,500 vehicles per day (1998 count), of which roughly 10% are trucks.

How long is Ashby RD over Churn Creek?

The structure is 61 ft (18.6 m) long with a longest span of 30 ft (9.1 m) and a deck 35 ft wide.

Who owns Ashby RD over Churn Creek?

It is owned by the City or Municipal Highway Agency.