US Bridges

Interstate 80 over South Yuba River

Fair

Nevada County, California · 03-NEV-080-R61.65L · Structure no. 17 0071L

Built
1964
61 years old
Condition
Fair
inspected August 2024
Type
Tee Beam
Concrete Continuous
Length
230 ft
5 main spans
Daily traffic
14,250
2020 count
Owner
State
State Highway Agency

About this bridge

Interstate 80 over South Yuba River is a concrete continuous tee beam carrying Interstate 80 over South Yuba River in Nevada County, California. It was built in 1964, so it is 61 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 14,250 vehicles a day, roughly 16% of them trucks, projected to reach 19,744 by 2042. The structure is 230 ft (70 m) long and 47 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesInterstate 80
CrossesSouth Yuba River
Location03-NEV-080-R61.65L
RouteInterstate 80
Coordinates39.32691, -120.57013
Functional classRural Principal Arterial - Interstate

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 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 rating44.3 US tons
Inventory rating31.7 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20 + Mod
Structure length230 ft (70 m)
Longest span50 ft (15.2 m)
Deck width47 ft (14.2 m)
Roadway width43 ft (13 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,250 (2020)
Projected traffic19,744 by 2042
Trucks16%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Interstate 80 over South Yuba River built?

It was built in 1964, making it 61 years old in 2025.

What condition is Interstate 80 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 August 2024.

How much traffic does Interstate 80 over South Yuba River carry?

About 14,250 vehicles per day (2020 count), of which roughly 16% are trucks.

How long is Interstate 80 over South Yuba River?

The structure is 230 ft (70 m) long with a longest span of 50 ft (15.2 m) and a deck 47 ft wide.

Who owns Interstate 80 over South Yuba River?

It is owned by the State Highway Agency.