US Bridges

Winding Road over Silver Fork Amer. River

Good

El Dorado County, California · No Data Entered · Structure no. 050356000001011

Built
1969
56 years old
Condition
Good
inspected September 2024
Type
Box Beam or Girders - Single or Spread
Concrete
Length
91 ft
1 main span
Daily traffic
10
2016 count
Owner
Federal
U.S. Forest Service

About this bridge

Winding Road over Silver Fork Amer. River is a concrete box beam or girders - single or spread carrying Winding Road over Silver Fork Amer. River in El Dorado County, California. It was built in 1969, so it is 56 years old, older 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 vehicles a day, projected to reach 15 by 2045. The structure is 91 ft (27.7 m) long and 28 ft wide.

CarriesWinding Road
CrossesSilver Fork Amer. River
LocationNo Data Entered
RouteFederal Lands Road 11N40
Coordinates38.69461, -120.20107
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 protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating40.7 US tons
Inventory rating33.6 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length91 ft (27.7 m)
Longest span91 ft (27.7 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2016)
Projected traffic15 by 2045
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byU.S. Forest Service
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Winding Road over Silver Fork Amer. River built?

It was built in 1969, making it 56 years old in 2025.

What condition is Winding Road over Silver Fork Amer. River 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 September 2024.

How much traffic does Winding Road over Silver Fork Amer. River carry?

About 10 vehicles per day (2016 count).

How long is Winding Road over Silver Fork Amer. River?

The structure is 91 ft (27.7 m) long with a longest span of 91 ft (27.7 m) and a deck 28 ft wide.

Who owns Winding Road over Silver Fork Amer. River?

It is owned by the U.S. Forest Service.