US Bridges

White Rock Road over Carson Creek Tributary

Good

El Dorado County, California · 0.8 MI W of Latrobe Road · Structure no. 25C0111

Built
2005
20 years old
Condition
Good
inspected July 2024
Type
Arch - Deck
Concrete
Length
66 ft
1 main span
Daily traffic
10,100
2019 count
Owner
County
County Highway Agency

About this bridge

White Rock Road over Carson Creek Tributary is a concrete arch - deck carrying White Rock Road over Carson Creek Tributary in El Dorado County, California. It was built in 2005, so it is 20 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 10,100 vehicles a day, roughly 10% of them trucks, projected to reach 7,457 by 2044. The structure is 66 ft (20 m) long and 49 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesWhite Rock Road
CrossesCarson Creek Tributary
Location0.8 MI W of Latrobe Road
RouteCounty Highway 0
Coordinates38.63598, -121.07708
Functional classRural Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length66 ft (20 m)
Longest span63 ft (19.1 m)
Deck width49 ft (15 m)
Roadway width49 ft (15 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,100 (2019)
Projected traffic7,457 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.7 mi (6 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was White Rock Road over Carson Creek Tributary built?

It was built in 2005, making it 20 years old in 2025.

What condition is White Rock Road over Carson Creek Tributary 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 July 2024.

How much traffic does White Rock Road over Carson Creek Tributary carry?

About 10,100 vehicles per day (2019 count), of which roughly 10% are trucks.

How long is White Rock Road over Carson Creek Tributary?

The structure is 66 ft (20 m) long with a longest span of 63 ft (19.1 m) and a deck 49 ft wide.

Who owns White Rock Road over Carson Creek Tributary?

It is owned by the County Highway Agency.