US Bridges

S Cow CR RD over Wilk Gulch

Fair

Shasta County, California · 4.1 MI N S.R. 44 · Structure no. 06C0198

Built
1975
50 years old
Condition
Fair
inspected September 2024
Type
Slab
Concrete Continuous
Length
39 ft
2 main spans
Daily traffic
160
2000 count
Owner
County
County Highway Agency

About this bridge

S Cow CR RD over Wilk Gulch is a concrete continuous slab carrying S Cow CR RD over Wilk Gulch in Shasta County, California. It was built in 1975, so it is 50 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 6 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 160 vehicles a day, roughly 2% of them trucks, projected to reach 218 by 2042. The structure is 39 ft (11.9 m) long and 24 ft wide. If it were closed, the detour would be 28 mi (45 km).

CarriesS Cow CR RD
CrossesWilk Gulch
Location4.1 MI N S.R. 44
RouteCounty Highway 0
Coordinates40.55474, -122.05544
Functional classRural 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length39 ft (11.9 m)
Longest span19 ft (5.8 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic160 (2000)
Projected traffic218 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed28 mi (45 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 S Cow CR RD over Wilk Gulch built?

It was built in 1975, making it 50 years old in 2025.

What condition is S Cow CR RD over Wilk Gulch 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 September 2024.

How much traffic does S Cow CR RD over Wilk Gulch carry?

About 160 vehicles per day (2000 count), of which roughly 2% are trucks.

How long is S Cow CR RD over Wilk Gulch?

The structure is 39 ft (11.9 m) long with a longest span of 19 ft (5.8 m) and a deck 24 ft wide.

Who owns S Cow CR RD over Wilk Gulch?

It is owned by the County Highway Agency.