US Bridges

Winding Road over Middle Fork Cosumnes

Fair

El Dorado County, California · No Data Entered · Structure no. 050351000001064

Built
1969
56 years old
Condition
Fair
inspected September 2023
Type
Box Beam or Girders - Single or Spread
Concrete
Length
169 ft
3 main spans
Daily traffic
25
Owner
Federal
U.S. Forest Service

About this bridge

Winding Road over Middle Fork Cosumnes is a concrete box beam or girders - single or spread carrying Winding Road over Middle Fork Cosumnes 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 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 25 vehicles a day, projected to reach 37 by 2045. The structure is 169 ft (51.5 m) long and 30 ft wide.

CarriesWinding Road
CrossesMiddle Fork Cosumnes
LocationNo Data Entered
RouteFederal Lands Road 9N17
Coordinates38.58499, -120.29767
Functional classRural Local

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 alignment6: Equal to present minimum criteria
Operating rating27.1 US tons
Inventory rating20.7 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length169 ft (51.5 m)
Longest span65 ft (19.8 m)
Deck width30 ft (9.1 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (—)
Projected traffic37 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 Middle Fork Cosumnes built?

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

What condition is Winding Road over Middle Fork Cosumnes 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 September 2023.

How much traffic does Winding Road over Middle Fork Cosumnes carry?

About 25 vehicles per day (latest count).

How long is Winding Road over Middle Fork Cosumnes?

The structure is 169 ft (51.5 m) long with a longest span of 65 ft (19.8 m) and a deck 30 ft wide.

Who owns Winding Road over Middle Fork Cosumnes?

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