US Bridges

Hicks Lane over Keefer Slough

Fair

Butte County, California · 0.25 MI S Keefer RD · Structure no. 12C0319

Built
1940
85 years old
Condition
Fair
inspected October 2024
Type
Slab
Concrete Continuous
Length
51 ft
5 main spans
Daily traffic
2,900
2015 count
Owner
County
County Highway Agency

About this bridge

Hicks Lane over Keefer Slough is a concrete continuous slab carrying Hicks Lane over Keefer Slough in Butte County, California. It was built in 1940, so it is 85 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 2,900 vehicles a day, roughly 10% of them trucks, projected to reach 2,958 by 2046. The structure is 51 ft (15.6 m) long and 23 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesHicks Lane
CrossesKeefer Slough
Location0.25 MI S Keefer RD
RouteCounty Highway 0
CountyButte County
StateCalifornia
Coordinates39.81568, -121.87685
Functional classUrban 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating29.7 US tons
Inventory rating17.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadUnknown
Structure length51 ft (15.6 m)
Longest span10 ft (3 m)
Deck width23 ft (7.1 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,900 (2015)
Projected traffic2,958 by 2046
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 Hicks Lane over Keefer Slough built?

It was built in 1940, making it 85 years old in 2025.

What condition is Hicks Lane over Keefer Slough 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 October 2024.

How much traffic does Hicks Lane over Keefer Slough carry?

About 2,900 vehicles per day (2015 count), of which roughly 10% are trucks.

How long is Hicks Lane over Keefer Slough?

The structure is 51 ft (15.6 m) long with a longest span of 10 ft (3 m) and a deck 23 ft wide.

Who owns Hicks Lane over Keefer Slough?

It is owned by the County Highway Agency.