US Bridges

Forest Ave over Little Chico Creek

Fair

Butte County, California · Just S of Humboldt RD · Structure no. 12C0298

Built
1981
44 years old
Condition
Fair
inspected October 2024
Type
Slab
Concrete Continuous
Length
93 ft
3 main spans
Daily traffic
14,600
2018 count
Owner
City
City or Municipal Highway Agency

About this bridge

Forest Ave over Little Chico Creek is a concrete continuous slab carrying Forest Ave over Little Chico Creek in Butte County, California. It was built in 1981, so it is 44 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 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 14,600 vehicles a day, roughly 4% of them trucks, projected to reach 18,796 by 2042. The structure is 93 ft (28.3 m) long and 75 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesForest Ave
CrossesLittle Chico Creek
LocationJust S of Humboldt RD
RouteCity Street 0
CountyButte County
StateCalifornia
Coordinates39.73741, -121.80426
Functional classUrban Minor Arterial

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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating87.5 US tons
Inventory rating52.5 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length93 ft (28.3 m)
Longest span36 ft (11 m)
Deck width75 ft (22.8 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,600 (2018)
Projected traffic18,796 by 2042
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Forest Ave over Little Chico Creek built?

It was built in 1981, making it 44 years old in 2025.

What condition is Forest Ave over Little Chico 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 October 2024.

How much traffic does Forest Ave over Little Chico Creek carry?

About 14,600 vehicles per day (2018 count), of which roughly 4% are trucks.

How long is Forest Ave over Little Chico Creek?

The structure is 93 ft (28.3 m) long with a longest span of 36 ft (11 m) and a deck 75 ft wide.

Who owns Forest Ave over Little Chico Creek?

It is owned by the City or Municipal Highway Agency.