US Bridges

County Road 303 over South Fork Willow Creek

Good

Glenn County, California · 4.5 MI South of Road 302 · Structure no. 11C0263

Built
2003
22 years old
Condition
Good
inspected August 2021
Type
Tee Beam
Concrete
Length
50 ft
1 main span
Daily traffic
27
2011 count
Owner
County
County Highway Agency

About this bridge

County Road 303 over South Fork Willow Creek is a concrete tee beam carrying County Road 303 over South Fork Willow Creek in Glenn County, California. It was built in 2003, so it is 22 years old, younger 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 27 vehicles a day, projected to reach 34 by 2043. The structure is 50 ft (15.2 m) long and 24 ft wide. If it were closed, the detour would be 29.2 mi (47 km).

Location

Open in Google Maps
CarriesCounty Road 303
CrossesSouth Fork Willow Creek
Location4.5 MI South of Road 302
RouteCounty Highway 0
CountyGlenn County
StateCalifornia
Coordinates39.52912, -122.4577
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 protection9 ExcellentNo problems noted.
Last inspectionAugust 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length50 ft (15.2 m)
Longest span48 ft (14.6 m)
Deck width24 ft (7.2 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic27 (2011)
Projected traffic34 by 2043
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed29.2 mi (47 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 County Road 303 over South Fork Willow Creek built?

It was built in 2003, making it 22 years old in 2025.

What condition is County Road 303 over South Fork Willow 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 August 2021.

How much traffic does County Road 303 over South Fork Willow Creek carry?

About 27 vehicles per day (2011 count).

How long is County Road 303 over South Fork Willow Creek?

The structure is 50 ft (15.2 m) long with a longest span of 48 ft (14.6 m) and a deck 24 ft wide.

Who owns County Road 303 over South Fork Willow Creek?

It is owned by the County Highway Agency.