US Bridges

Book Farm Road over Little Dry Creek

Fair

Butte County, California · W of SR 99 N of SR 149 · Structure no. 12C0415

Built
2008
17 years old
Condition
Fair
inspected August 2023
Type
Slab
Concrete Continuous
Length
121 ft
3 main spans
Daily traffic
100
2019 count
Owner
County
County Highway Agency

About this bridge

Book Farm Road over Little Dry Creek is a concrete continuous slab carrying Book Farm Road over Little Dry Creek in Butte County, California. It was built in 2008, so it is 17 years old, younger 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 100 vehicles a day, roughly 3% of them trucks, projected to reach 154 by 2043. The structure is 121 ft (37 m) long and 35 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesBook Farm Road
CrossesLittle Dry Creek
LocationW of SR 99 N of SR 149
RouteCounty Highway 0
CountyButte County
StateCalifornia
Coordinates39.63215, -121.70524
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length121 ft (37 m)
Longest span40 ft (12.1 m)
Deck width35 ft (10.7 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2019)
Projected traffic154 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Book Farm Road over Little Dry Creek built?

It was built in 2008, making it 17 years old in 2025.

What condition is Book Farm Road over Little Dry 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 August 2023.

How much traffic does Book Farm Road over Little Dry Creek carry?

About 100 vehicles per day (2019 count), of which roughly 3% are trucks.

How long is Book Farm Road over Little Dry Creek?

The structure is 121 ft (37 m) long with a longest span of 40 ft (12.1 m) and a deck 35 ft wide.

Who owns Book Farm Road over Little Dry Creek?

It is owned by the County Highway Agency.