US Bridges

Richvale Highway over Little Dry Creek

Good

Butte County, California · 1.2 MI E Aguas Frias RD · Structure no. 12C0347

Built
1930
95 years old
Condition
Good
inspected May 2023
Type
Tee Beam
Concrete Continuous
Length
49 ft
3 main spans
Daily traffic
133
2007 count
Owner
County
County Highway Agency

About this bridge

Richvale Highway over Little Dry Creek is a concrete continuous tee beam carrying Richvale Highway over Little Dry 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 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 133 vehicles a day, roughly 14% of them trucks, projected to reach 182 by 2041. The structure is 49 ft (14.9 m) long and 23 ft wide. If it were closed, the detour would be 13 mi (21 km).

CarriesRichvale Highway
CrossesLittle Dry Creek
Location1.2 MI E Aguas Frias RD
RouteCounty Highway 0
Coordinates39.49311, -121.83557
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating25.4 US tons
Inventory rating19.6 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length49 ft (14.9 m)
Longest span16 ft (4.9 m)
Deck width23 ft (7.1 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic133 (2007)
Projected traffic182 by 2041
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 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 Richvale Highway over Little Dry Creek built?

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

What condition is Richvale Highway over Little Dry 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 May 2023.

How much traffic does Richvale Highway over Little Dry Creek carry?

About 133 vehicles per day (2007 count), of which roughly 14% are trucks.

How long is Richvale Highway over Little Dry Creek?

The structure is 49 ft (14.9 m) long with a longest span of 16 ft (4.9 m) and a deck 23 ft wide.

Who owns Richvale Highway over Little Dry Creek?

It is owned by the County Highway Agency.