US Bridges

Churn Creek RD over Boulder Creek

Fair

Shasta County, California · 0.9 MI South of SR 299 · Structure no. 06C0360

Built
1998
27 years old
Condition
Fair
inspected June 2023
Type
Arch - Deck
Steel
Length
33 ft
2 main spans
Daily traffic
2,500
2012 count
Owner
City
City or Municipal Highway Agency

About this bridge

Churn Creek RD over Boulder Creek is a steel arch - deck carrying Churn Creek RD over Boulder Creek in Shasta County, California. It was built in 1998, so it is 27 years old, younger 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 2,500 vehicles a day, roughly 5% of them trucks, projected to reach 4,906 by 2043. The structure is 33 ft (10 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesChurn Creek RD
CrossesBoulder Creek
Location0.9 MI South of SR 299
RouteCity Street 0
CountyShasta County
StateCalifornia
Coordinates40.60256, -122.34499
Functional classUrban Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeArch - Deck
MaterialSteel
DeckNot applicable
Main spans2
Design loadHS 20 + Mod
Structure length33 ft (10 m)
Longest span16 ft (5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,500 (2012)
Projected traffic4,906 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Churn Creek RD over Boulder Creek built?

It was built in 1998, making it 27 years old in 2025.

What condition is Churn Creek RD over Boulder 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 June 2023.

How much traffic does Churn Creek RD over Boulder Creek carry?

About 2,500 vehicles per day (2012 count), of which roughly 5% are trucks.

How long is Churn Creek RD over Boulder Creek?

The structure is 33 ft (10 m) long with a longest span of 16 ft (5 m).

Who owns Churn Creek RD over Boulder Creek?

It is owned by the City or Municipal Highway Agency.