US Bridges

Silver Fork RD over South Fk American River

Fair

El Dorado County, California · 0.1 MI SE of US 50 · Structure no. 25C0113

Built
1953
72 years old, rebuilt 2019
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
61 ft
1 main span
Daily traffic
285
2010 count
Owner
County
County Highway Agency

About this bridge

Silver Fork RD over South Fk American River is a steel stringer/multi-beam or girder carrying Silver Fork RD over South Fk American River in El Dorado County, California. It was built in 1953 and reconstructed in 2019, so it is 72 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 5 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 285 vehicles a day, roughly 10% of them trucks, projected to reach 600 by 2041. The structure is 61 ft (18.5 m) long and 31 ft wide. If it were closed, the detour would be 49.7 mi (80 km).

CarriesSilver Fork RD
CrossesSouth Fk American River
Location0.1 MI SE of US 50
RouteCounty Highway 0
Coordinates38.7737, -120.29357
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 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 adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating56.4 US tons
Inventory rating43.5 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length61 ft (18.5 m)
Longest span61 ft (18.5 m)
Deck width31 ft (9.6 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic285 (2010)
Projected traffic600 by 2041
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed49.7 mi (80 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 Silver Fork RD over South Fk American River built?

It was built in 1953, making it 72 years old in 2025. It was reconstructed in 2019.

What condition is Silver Fork RD over South Fk American River 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 2023.

How much traffic does Silver Fork RD over South Fk American River carry?

About 285 vehicles per day (2010 count), of which roughly 10% are trucks.

How long is Silver Fork RD over South Fk American River?

The structure is 61 ft (18.5 m) long with a longest span of 61 ft (18.5 m) and a deck 31 ft wide.

Who owns Silver Fork RD over South Fk American River?

It is owned by the County Highway Agency.