US Bridges

Harriet LN over Mid Fk Feather Riv Ovrfl

Fair

Plumas County, California · 1.4 MI S Dyson LN · Structure no. 09C0088

Built
1963
62 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Concrete
Length
41 ft
2 main spans
Daily traffic
125
2019 count
Owner
County
County Highway Agency

About this bridge

Harriet LN over Mid Fk Feather Riv Ovrfl is a concrete stringer/multi-beam or girder carrying Harriet LN over Mid Fk Feather Riv Ovrfl in Plumas County, California. It was built in 1963, so it is 62 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 125 vehicles a day, roughly 2% of them trucks, projected to reach 63 by 2041. The structure is 41 ft (12.5 m) long and 16 ft wide. If it were closed, the detour would be 16.8 mi (27 km).

Location

Open in Google Maps
CarriesHarriet LN
CrossesMid Fk Feather Riv Ovrfl
Location1.4 MI S Dyson LN
RouteCounty Highway 0
CountyPlumas County
StateCalifornia
Coordinates39.73172, -120.30575
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length41 ft (12.5 m)
Longest span20 ft (6.1 m)
Deck width16 ft (5 m)
Roadway width16 ft (4.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic125 (2019)
Projected traffic63 by 2041
Trucks2%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.8 mi (27 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 Harriet LN over Mid Fk Feather Riv Ovrfl built?

It was built in 1963, making it 62 years old in 2025.

What condition is Harriet LN over Mid Fk Feather Riv Ovrfl 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 September 2024.

How much traffic does Harriet LN over Mid Fk Feather Riv Ovrfl carry?

About 125 vehicles per day (2019 count), of which roughly 2% are trucks.

How long is Harriet LN over Mid Fk Feather Riv Ovrfl?

The structure is 41 ft (12.5 m) long with a longest span of 20 ft (6.1 m) and a deck 16 ft wide.

Who owns Harriet LN over Mid Fk Feather Riv Ovrfl?

It is owned by the County Highway Agency.