US Bridges

Road 42 over East Fork Wilson Creek

Fair

Glenn County, California · Just W of HWY 99W · Structure no. 11C0221

Built
1960
65 years old
Condition
Fair
inspected February 2025
Type
Culvert
Concrete Continuous
Length
27 ft
3 main spans
Daily traffic
79
2011 count
Owner
County
County Highway Agency

About this bridge

Road 42 over East Fork Wilson Creek is a concrete continuous culvert carrying Road 42 over East Fork Wilson Creek in Glenn County, California. It was built in 1960, so it is 65 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 6 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 79 vehicles a day, projected to reach 91 by 2047. The structure is 27 ft (8.2 m) long and 27 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesRoad 42
CrossesEast Fork Wilson Creek
LocationJust W of HWY 99W
RouteCounty Highway 0
Coordinates39.57324, -122.19409
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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to 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 alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length27 ft (8.2 m)
Longest span8 ft (2.4 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic79 (2011)
Projected traffic91 by 2047
Trucks—
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 Road 42 over East Fork Wilson Creek built?

It was built in 1960, making it 65 years old in 2025.

What condition is Road 42 over East Fork Wilson 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 February 2025.

How much traffic does Road 42 over East Fork Wilson Creek carry?

About 79 vehicles per day (2011 count).

How long is Road 42 over East Fork Wilson Creek?

The structure is 27 ft (8.2 m) long with a longest span of 8 ft (2.4 m) and a deck 27 ft wide.

Who owns Road 42 over East Fork Wilson Creek?

It is owned by the County Highway Agency.