US Bridges

East Fern Road over Old Cow Creek

Fair

Shasta County, California · 4.3 MI N of Whitmore RD · Structure no. 06C0003

Built
2001
24 years old
Condition
Fair
inspected April 2023
Type
Box Beam or Girders - Multiple
Concrete
Length
80 ft
1 main span
Daily traffic
285
2012 count
Owner
County
County Highway Agency

About this bridge

East Fern Road over Old Cow Creek is a concrete box beam or girders - multiple carrying East Fern Road over Old Cow Creek in Shasta County, California. It was built in 2001, so it is 24 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 285 vehicles a day, roughly 5% of them trucks, projected to reach 360 by 2041. The structure is 80 ft (24.4 m) long and 31 ft wide. If it were closed, the detour would be 49.7 mi (80 km).

CarriesEast Fern Road
CrossesOld Cow Creek
Location4.3 MI N of Whitmore RD
RouteCounty Highway 0
Coordinates40.67921, -121.87154
Functional classRural Major 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
Deck7 GoodSome minor problems.
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 inspectionApril 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
Deck geometry6: Equal to present minimum criteria
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

MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length80 ft (24.4 m)
Longest span75 ft (22.9 m)
Deck width31 ft (9.6 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic285 (2012)
Projected traffic360 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed49.7 mi (80 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 East Fern Road over Old Cow Creek built?

It was built in 2001, making it 24 years old in 2025.

What condition is East Fern Road over Old Cow 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 April 2023.

How much traffic does East Fern Road over Old Cow Creek carry?

About 285 vehicles per day (2012 count), of which roughly 5% are trucks.

How long is East Fern Road over Old Cow Creek?

The structure is 80 ft (24.4 m) long with a longest span of 75 ft (22.9 m) and a deck 31 ft wide.

Who owns East Fern Road over Old Cow Creek?

It is owned by the County Highway Agency.