US Bridges

Cottonwood RD over Dudley Creek

Fair

Butte County, California · 0.9 MI W Table Mtn Blvd · Structure no. 12C0340

Built
1930
95 years old
Condition
Fair
inspected March 2025
Type
Tee Beam
Concrete Continuous
Length
38 ft
2 main spans
Daily traffic
135
2019 count
Owner
County
County Highway Agency

About this bridge

Cottonwood RD over Dudley Creek is a concrete continuous tee beam carrying Cottonwood RD over Dudley Creek in Butte County, California. It was built in 1930, so it is 95 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 135 vehicles a day, roughly 2% of them trucks, projected to reach 104 by 2047. The structure is 38 ft (11.6 m) long and 19 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

Open in Google Maps
CarriesCottonwood RD
CrossesDudley Creek
Location0.9 MI W Table Mtn Blvd
RouteCounty Highway 0
CountyButte County
StateCalifornia
Coordinates39.55264, -121.61094
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Last inspectionMarch 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating30 US tons
Inventory rating17.9 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length38 ft (11.6 m)
Longest span18 ft (5.5 m)
Deck width19 ft (5.9 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic135 (2019)
Projected traffic104 by 2047
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 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 Cottonwood RD over Dudley Creek built?

It was built in 1930, making it 95 years old in 2025.

What condition is Cottonwood RD over Dudley 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 March 2025.

How much traffic does Cottonwood RD over Dudley Creek carry?

About 135 vehicles per day (2019 count), of which roughly 2% are trucks.

How long is Cottonwood RD over Dudley Creek?

The structure is 38 ft (11.6 m) long with a longest span of 18 ft (5.5 m) and a deck 19 ft wide.

Who owns Cottonwood RD over Dudley Creek?

It is owned by the County Highway Agency.