US Bridges

County RD 33 over Wilson Creek

Good

Glenn County, California · 0.3 MI West of RD D · Structure no. 11C0239

Built
1970
55 years old
Condition
Good
inspected August 2024
Type
Slab
Concrete Continuous
Length
121 ft
4 main spans
Daily traffic
160
2009 count
Owner
County
County Highway Agency

About this bridge

County RD 33 over Wilson Creek is a concrete continuous slab carrying County RD 33 over Wilson Creek in Glenn County, California. It was built in 1970, so it is 55 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 160 vehicles a day, roughly 10% of them trucks, projected to reach 184 by 2044. The structure is 121 ft (36.9 m) long and 32 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesCounty RD 33
CrossesWilson Creek
Location0.3 MI West of RD D
RouteCounty Highway 0
Coordinates39.62476, -122.25829
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 protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38.9 US tons
Inventory rating23.6 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadUnknown
Structure length121 ft (36.9 m)
Longest span30 ft (9.1 m)
Deck width32 ft (9.9 m)
Roadway width32 ft (9.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic160 (2009)
Projected traffic184 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 RD 33 over Wilson Creek built?

It was built in 1970, making it 55 years old in 2025.

What condition is County RD 33 over Wilson 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 2024.

How much traffic does County RD 33 over Wilson Creek carry?

About 160 vehicles per day (2009 count), of which roughly 10% are trucks.

How long is County RD 33 over Wilson Creek?

The structure is 121 ft (36.9 m) long with a longest span of 30 ft (9.1 m) and a deck 32 ft wide.

Who owns County RD 33 over Wilson Creek?

It is owned by the County Highway Agency.