US Bridges

CO Road 200A over Hambright Creek

Fair

Glenn County, California · 3.1 MI SE of RD #200 · Structure no. 11C0213

Built
1975
50 years old
Condition
Fair
inspected August 2022
Type
Culvert
Concrete Continuous
Length
27 ft
2 main spans
Daily traffic
99
2014 count
Owner
County
County Highway Agency

About this bridge

CO Road 200A over Hambright Creek is a concrete continuous culvert carrying CO Road 200A over Hambright Creek in Glenn County, California. It was built in 1975, so it is 50 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 99 vehicles a day, roughly 10% of them trucks, projected to reach 112 by 2044. The structure is 27 ft (8.2 m) long and 23 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesCO Road 200A
CrossesHambright Creek
Location3.1 MI SE of RD #200
RouteCounty Highway 0
CountyGlenn County
StateCalifornia
Coordinates39.76221, -122.34095
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length27 ft (8.2 m)
Longest span13 ft (4 m)
Deck width23 ft (6.9 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic99 (2014)
Projected traffic112 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 CO Road 200A over Hambright Creek built?

It was built in 1975, making it 50 years old in 2025.

What condition is CO Road 200A over Hambright 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 2022.

How much traffic does CO Road 200A over Hambright Creek carry?

About 99 vehicles per day (2014 count), of which roughly 10% are trucks.

How long is CO Road 200A over Hambright Creek?

The structure is 27 ft (8.2 m) long with a longest span of 13 ft (4 m) and a deck 23 ft wide.

Who owns CO Road 200A over Hambright Creek?

It is owned by the County Highway Agency.