US Bridges

South Yuba DR over South Yuba River

Fair

Placer County, California · N of Graham Hill RD · Structure no. 19C0032

Built
1925
100 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Concrete
Length
39 ft
1 main span
Daily traffic
50
1978 count
Owner
County
County Highway Agency

About this bridge

South Yuba DR over South Yuba River is a concrete stringer/multi-beam or girder carrying South Yuba DR over South Yuba River in Placer County, California. It was built in 1925, so it is 100 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 50 vehicles a day, roughly 2% of them trucks, projected to reach 132 by 2041. The structure is 39 ft (11.9 m) long and 18 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesSouth Yuba DR
CrossesSouth Yuba River
LocationN of Graham Hill RD
RouteCounty Highway 0
Coordinates39.31449, -120.46769
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating28.2 US tons
Inventory rating16.8 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length39 ft (11.9 m)
Longest span37 ft (11.3 m)
Deck width18 ft (5.5 m)
Roadway width17 ft (5.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (1978)
Projected traffic132 by 2041
Trucks2%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 South Yuba DR over South Yuba River built?

It was built in 1925, making it 100 years old in 2025.

What condition is South Yuba DR over South Yuba 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 July 2023.

How much traffic does South Yuba DR over South Yuba River carry?

About 50 vehicles per day (1978 count), of which roughly 2% are trucks.

How long is South Yuba DR over South Yuba River?

The structure is 39 ft (11.9 m) long with a longest span of 37 ft (11.3 m) and a deck 18 ft wide.

Who owns South Yuba DR over South Yuba River?

It is owned by the County Highway Agency.