US Bridges

Whites Gulch Road over Whites Gulch

Good

Siskiyou County, California · 0.4 M S of Sawyer Bar RD · Structure no. 02C0279

Built
2009
16 years old
Condition
Good
inspected August 2023
Type
Slab
Concrete
Length
62 ft
1 main span
Daily traffic
25
2011 count
Owner
County
County Highway Agency

About this bridge

Whites Gulch Road over Whites Gulch is a concrete slab carrying Whites Gulch Road over Whites Gulch in Siskiyou County, California. It was built in 2009, so it is 16 years old, younger than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 25 vehicles a day, roughly 5% of them trucks, projected to reach 29 by 2045. The structure is 62 ft (18.9 m) long and 20 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesWhites Gulch Road
CrossesWhites Gulch
Location0.4 M S of Sawyer Bar RD
RouteCounty Highway 0
Coordinates41.29497, -123.08255
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length62 ft (18.9 m)
Longest span62 ft (18.9 m)
Deck width20 ft (6.2 m)
Roadway width20 ft (6.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2011)
Projected traffic29 by 2045
Trucks5%
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 Whites Gulch Road over Whites Gulch built?

It was built in 2009, making it 16 years old in 2025.

What condition is Whites Gulch Road over Whites Gulch in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2023.

How much traffic does Whites Gulch Road over Whites Gulch carry?

About 25 vehicles per day (2011 count), of which roughly 5% are trucks.

How long is Whites Gulch Road over Whites Gulch?

The structure is 62 ft (18.9 m) long with a longest span of 62 ft (18.9 m) and a deck 20 ft wide.

Who owns Whites Gulch Road over Whites Gulch?

It is owned by the County Highway Agency.