US Bridges

Wilson Landing RD over Rock Creek

Fair

Butte County, California · 2.6 MI W of SH 99 · Structure no. 12C0306

Built
1919
106 years old, rebuilt 1975
Condition
Fair
inspected July 2024
Type
Tee Beam
Concrete Continuous
Length
80 ft
2 main spans
Daily traffic
843
2016 count
Owner
County
County Highway Agency

About this bridge

Wilson Landing RD over Rock Creek is a concrete continuous tee beam carrying Wilson Landing RD over Rock Creek in Butte County, California. It was built in 1919 and reconstructed in 1975, so it is 106 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.

It carries about 843 vehicles a day, roughly 17% of them trucks, projected to reach 993 by 2042. The structure is 80 ft (24.4 m) long and 22 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesWilson Landing RD
CrossesRock Creek
Location2.6 MI W of SH 99
RouteCounty Highway 0
CountyButte County
StateCalifornia
Coordinates39.79681, -121.95207
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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating67.9 US tons
Inventory rating41 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length80 ft (24.4 m)
Longest span39 ft (12 m)
Deck width22 ft (6.7 m)
Roadway width20 ft (6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic843 (2016)
Projected traffic993 by 2042
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 Wilson Landing RD over Rock Creek built?

It was built in 1919, making it 106 years old in 2025. It was reconstructed in 1975.

What condition is Wilson Landing RD over Rock 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 July 2024.

How much traffic does Wilson Landing RD over Rock Creek carry?

About 843 vehicles per day (2016 count), of which roughly 17% are trucks.

How long is Wilson Landing RD over Rock Creek?

The structure is 80 ft (24.4 m) long with a longest span of 39 ft (12 m) and a deck 22 ft wide.

Who owns Wilson Landing RD over Rock Creek?

It is owned by the County Highway Agency.