US Bridges

County Road 303 over S Fk Willow Creek

FairPosted for load

Glenn County, California · 4.5 MI S of S.H. 162 · Structure no. 11C0162

Built
1929
96 years old
Condition
Fair
inspected August 2024
Type
Tee Beam
Concrete
Length
34 ft
1 main span
Daily traffic
56
2006 count
Owner
County
County Highway Agency

About this bridge

County Road 303 over S Fk Willow Creek is a concrete tee beam carrying County Road 303 over S Fk Willow Creek in Glenn County, California. It was built in 1929, so it is 96 years old, older 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. Its operating status is: posted for load restriction.

It carries about 56 vehicles a day, projected to reach 65 by 2043. The structure is 34 ft (10.4 m) long and 20 ft wide. If it were closed, the detour would be 31.1 mi (50 km).

Location

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CarriesCounty Road 303
CrossesS Fk Willow Creek
Location4.5 MI S of S.H. 162
RouteCounty Highway 0
CountyGlenn County
StateCalifornia
Coordinates39.53588, -122.45334
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating22.5 US tons
Inventory rating13.6 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length34 ft (10.4 m)
Longest span34 ft (10.4 m)
Deck width20 ft (6.2 m)
Roadway width18 ft (5.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic56 (2006)
Projected traffic65 by 2043
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed31.1 mi (50 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 S Fk Willow Creek built?

It was built in 1929, making it 96 years old in 2025.

What condition is County Road 303 over S Fk Willow 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 August 2024.

How much traffic does County Road 303 over S Fk Willow Creek carry?

About 56 vehicles per day (2006 count).

How long is County Road 303 over S Fk Willow Creek?

The structure is 34 ft (10.4 m) long with a longest span of 34 ft (10.4 m) and a deck 20 ft wide.

Who owns County Road 303 over S Fk Willow Creek?

It is owned by the County Highway Agency.