US Bridges

State Route 65 over Big Yankee Slough

Fair

Placer County, California · 03-PLA-065-R22.25 · Structure no. 19 0198R

Built
2012
13 years old
Condition
Fair
inspected February 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
164 ft
2 main spans
Daily traffic
8,400
2009 count
Owner
State
State Highway Agency

About this bridge

State Route 65 over Big Yankee Slough is a prestressed concrete continuous box beam or girders - multiple carrying State Route 65 over Big Yankee Slough in Placer County, California. It was built in 2012, so it is 13 years old, younger 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 8,400 vehicles a day, projected to reach 18,290 by 2045. The structure is 164 ft (50 m) long and 44 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesState Route 65
CrossesBig Yankee Slough
Location03-PLA-065-R22.25
RouteState Highway 65
CountyPlacer County
StateCalifornia
Coordinates38.96605, -121.37651
Functional classRural Principal Arterial - Other

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.8 US tons
Inventory rating44 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length164 ft (50 m)
Longest span77 ft (23.6 m)
Deck width44 ft (13.5 m)
Roadway width41 ft (12.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,400 (2009)
Projected traffic18,290 by 2045
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was State Route 65 over Big Yankee Slough built?

It was built in 2012, making it 13 years old in 2025.

What condition is State Route 65 over Big Yankee Slough 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 February 2023.

How much traffic does State Route 65 over Big Yankee Slough carry?

About 8,400 vehicles per day (2009 count).

How long is State Route 65 over Big Yankee Slough?

The structure is 164 ft (50 m) long with a longest span of 77 ft (23.6 m) and a deck 44 ft wide.

Who owns State Route 65 over Big Yankee Slough?

It is owned by the State Highway Agency.