US Bridges

Camp Layman Road over Middle Fork Feather Riv

Fair

Plumas County, California · 0.2 MI South of SR 70 · Structure no. 09C0095

Built
1938
87 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
203 ft
4 main spans
Daily traffic
35
2019 count
Owner
County
County Highway Agency

About this bridge

Camp Layman Road over Middle Fork Feather Riv is a steel continuous stringer/multi-beam or girder carrying Camp Layman Road over Middle Fork Feather Riv in Plumas County, California. It was built in 1938, so it is 87 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 35 vehicles a day, roughly 2% of them trucks, projected to reach 75 by 2044. The structure is 203 ft (61.9 m) long and 13 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesCamp Layman Road
CrossesMiddle Fork Feather Riv
Location0.2 MI South of SR 70
RouteCounty Highway 0
CountyPlumas County
StateCalifornia
Coordinates39.83291, -120.67519
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
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 protection3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating25 US tons
Inventory rating16.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckWood or timber
Main spans4
Design loadH 15
Structure length203 ft (61.9 m)
Longest span60 ft (18.3 m)
Deck width13 ft (4.1 m)
Roadway width12 ft (3.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35 (2019)
Projected traffic75 by 2044
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 Camp Layman Road over Middle Fork Feather Riv built?

It was built in 1938, making it 87 years old in 2025.

What condition is Camp Layman Road over Middle Fork Feather Riv 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 October 2023.

How much traffic does Camp Layman Road over Middle Fork Feather Riv carry?

About 35 vehicles per day (2019 count), of which roughly 2% are trucks.

How long is Camp Layman Road over Middle Fork Feather Riv?

The structure is 203 ft (61.9 m) long with a longest span of 60 ft (18.3 m) and a deck 13 ft wide.

Who owns Camp Layman Road over Middle Fork Feather Riv?

It is owned by the County Highway Agency.