US Bridges

County Road D over White Cabin Creek

Fair

Glenn County, California · 5.8 MI N of S.H. 162 · Structure no. 11C0042

Built
1919
106 years old, rebuilt 1950
Condition
Fair
inspected August 2024
Type
Girder and Floorbeam System
Concrete Continuous
Length
44 ft
2 main spans
Daily traffic
351
2010 count
Owner
County
County Highway Agency

About this bridge

County Road D over White Cabin Creek is a concrete continuous girder and floorbeam system carrying County Road D over White Cabin Creek in Glenn County, California. It was built in 1919 and reconstructed in 1950, so it is 106 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 351 vehicles a day, roughly 10% of them trucks, projected to reach 548 by 2044. The structure is 44 ft (13.4 m) long and 31 ft wide. If it were closed, the detour would be 18 mi (29 km).

Location

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CarriesCounty Road D
CrossesWhite Cabin Creek
Location5.8 MI N of S.H. 162
RouteCounty Highway 0
CountyGlenn County
StateCalifornia
Coordinates39.60523, -122.24977
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
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 alignment8: Equal to present desirable criteria
Operating rating31.1 US tons
Inventory rating18.5 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length44 ft (13.4 m)
Longest span21 ft (6.4 m)
Deck width31 ft (9.4 m)
Roadway width30 ft (9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic351 (2010)
Projected traffic548 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18 mi (29 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 D over White Cabin Creek built?

It was built in 1919, making it 106 years old in 2025. It was reconstructed in 1950.

What condition is County Road D over White Cabin 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 2024.

How much traffic does County Road D over White Cabin Creek carry?

About 351 vehicles per day (2010 count), of which roughly 10% are trucks.

How long is County Road D over White Cabin Creek?

The structure is 44 ft (13.4 m) long with a longest span of 21 ft (6.4 m) and a deck 31 ft wide.

Who owns County Road D over White Cabin Creek?

It is owned by the County Highway Agency.