US Bridges

Clark Creek Road over Clark Creek

Good

Shasta County, California · 5.2 MI NW of SR 89 · Structure no. 06C0038

Built
1950
75 years old
Condition
Good
inspected May 2023
Type
Slab
Concrete Continuous
Length
40 ft
2 main spans
Daily traffic
200
2015 count
Owner
County
County Highway Agency

About this bridge

Clark Creek Road over Clark Creek is a concrete continuous slab carrying Clark Creek Road over Clark Creek in Shasta County, California. It was built in 1950, so it is 75 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 200 vehicles a day, roughly 10% of them trucks, projected to reach 320 by 2041. The structure is 40 ft (12.2 m) long and 20 ft wide. If it were closed, the detour would be 13 mi (21 km).

Location

Open in Google Maps
CarriesClark Creek Road
CrossesClark Creek
Location5.2 MI NW of SR 89
RouteCounty Highway 0
CountyShasta County
StateCalifornia
Coordinates41.04321, -121.67342
Functional classRural Local

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.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length40 ft (12.2 m)
Longest span22 ft (6.8 m)
Deck width20 ft (6.1 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2015)
Projected traffic320 by 2041
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Clark Creek Road over Clark Creek built?

It was built in 1950, making it 75 years old in 2025.

What condition is Clark Creek Road over Clark Creek 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 May 2023.

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

About 200 vehicles per day (2015 count), of which roughly 10% are trucks.

How long is Clark Creek Road over Clark Creek?

The structure is 40 ft (12.2 m) long with a longest span of 22 ft (6.8 m) and a deck 20 ft wide.

Who owns Clark Creek Road over Clark Creek?

It is owned by the County Highway Agency.