US Bridges

County Road 303 over Stony Creek

Fair

Glenn County, California · Just East of RD 306 · Structure no. 11C0258

Built
1981
44 years old
Condition
Fair
inspected August 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
231 ft
3 main spans
Daily traffic
25
2011 count
Owner
County
County Highway Agency

About this bridge

County Road 303 over Stony Creek is a concrete continuous box beam or girders - multiple carrying County Road 303 over Stony Creek in Glenn 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 25 vehicles a day, projected to reach 35 by 2043. The structure is 231 ft (70.5 m) long and 25 ft wide. If it were closed, the detour would be 31.1 mi (50 km).

Location

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CarriesCounty Road 303
CrossesStony Creek
LocationJust East of RD 306
RouteCounty Highway 0
CountyGlenn County
StateCalifornia
Coordinates39.4346, -122.50356
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating30 US tons
Inventory rating17.9 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length231 ft (70.5 m)
Longest span87 ft (26.5 m)
Deck width25 ft (7.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2011)
Projected traffic35 by 2043
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed31.1 mi (50 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 County Road 303 over Stony Creek built?

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

What condition is County Road 303 over Stony 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 County Road 303 over Stony Creek carry?

About 25 vehicles per day (2011 count).

How long is County Road 303 over Stony Creek?

The structure is 231 ft (70.5 m) long with a longest span of 87 ft (26.5 m) and a deck 25 ft wide.

Who owns County Road 303 over Stony Creek?

It is owned by the County Highway Agency.