US Bridges

State Route 36 over North Fork Feather River

Fair

Plumas County, California · 02-PLU-036-8.84 · Structure no. 09 0010

Built
1966
59 years old
Condition
Fair
inspected June 2023
Type
Tee Beam
Concrete Continuous
Length
150 ft
3 main spans
Daily traffic
5,500
2009 count
Owner
State
State Highway Agency

About this bridge

State Route 36 over North Fork Feather River is a concrete continuous tee beam carrying State Route 36 over North Fork Feather River in Plumas County, California. It was built in 1966, so it is 59 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 5,500 vehicles a day, roughly 7% of them trucks, projected to reach 7,243 by 2040. The structure is 150 ft (45.7 m) long and 68 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesState Route 36
CrossesNorth Fork Feather River
Location02-PLU-036-8.84
RouteState Highway 36
Coordinates40.31042, -121.22863
Functional classRural Minor Arterial

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 protection9 ExcellentNo problems noted.
Last inspectionJune 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 geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating36.8 US tons
Inventory rating26.1 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length150 ft (45.7 m)
Longest span60 ft (18.3 m)
Deck width68 ft (20.7 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,500 (2009)
Projected traffic7,243 by 2040
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

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 State Route 36 over North Fork Feather River built?

It was built in 1966, making it 59 years old in 2025.

What condition is State Route 36 over North Fork Feather 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 June 2023.

How much traffic does State Route 36 over North Fork Feather River carry?

About 5,500 vehicles per day (2009 count), of which roughly 7% are trucks.

How long is State Route 36 over North Fork Feather River?

The structure is 150 ft (45.7 m) long with a longest span of 60 ft (18.3 m) and a deck 68 ft wide.

Who owns State Route 36 over North Fork Feather River?

It is owned by the State Highway Agency.