US Bridges

County Road D over S Fk Willow Creek

Good

Glenn County, California · 2.2 MI N S.H. 162 · Structure no. 11C0040

Built
1967
58 years old
Condition
Good
inspected February 2023
Type
Slab
Concrete Continuous
Length
72 ft
3 main spans
Daily traffic
491
2011 count
Owner
County
County Highway Agency

About this bridge

County Road D over S Fk Willow Creek is a concrete continuous slab carrying County Road D over S Fk Willow Creek in Glenn County, California. It was built in 1967, so it is 58 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 491 vehicles a day, roughly 10% of them trucks, projected to reach 643 by 2041. The structure is 72 ft (21.9 m) long and 32 ft wide. If it were closed, the detour would be 18 mi (29 km).

CarriesCounty Road D
CrossesS Fk Willow Creek
Location2.2 MI N S.H. 162
RouteCounty Highway 0
Coordinates39.55389, -122.24932
Functional classRural Major Collector

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 protection7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70 US tons
Inventory rating42.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length72 ft (21.9 m)
Longest span28 ft (8.5 m)
Deck width32 ft (9.9 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic491 (2011)
Projected traffic643 by 2041
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18 mi (29 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 D over S Fk Willow Creek built?

It was built in 1967, making it 58 years old in 2025.

What condition is County Road D over S Fk 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 February 2023.

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

About 491 vehicles per day (2011 count), of which roughly 10% are trucks.

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

The structure is 72 ft (21.9 m) long with a longest span of 28 ft (8.5 m) and a deck 32 ft wide.

Who owns County Road D over S Fk Willow Creek?

It is owned by the County Highway Agency.