US Bridges

Fs Route No. 301 over Little NF Clearwater

Fair

Shoshone County, Idaho · Little NF Clearwater · Structure no. 010402000000186

Built
1951
74 years old, rebuilt 2011
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
64 ft
2 main spans
Daily traffic
40
2018 count
Owner
Federal
U.S. Forest Service

About this bridge

Fs Route No. 301 over Little NF Clearwater is a wood or timber stringer/multi-beam or girder carrying Fs Route No. 301 over Little NF Clearwater in Shoshone County, Idaho. It was built in 1951 and reconstructed in 2011, so it is 74 years old, older than the Idaho average of 45.3 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 40 vehicles a day, projected to reach 60 by 2045. The structure is 64 ft (19.4 m) long and 16 ft wide. If it were closed, the detour would be 620.7 mi (999 km).

Location

Open in Google Maps
CarriesFs Route No. 301
CrossesLittle NF Clearwater
LocationLittle NF Clearwater
RouteFederal Lands Road 301
CountyShoshone County
StateIdaho
Coordinates47.07443, -115.84513
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans2
Design loadOther
Structure length64 ft (19.4 m)
Longest span31 ft (9.4 m)
Deck width16 ft (4.9 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2018)
Projected traffic60 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed620.7 mi (999 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byU.S. Forest Service
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Fs Route No. 301 over Little NF Clearwater built?

It was built in 1951, making it 74 years old in 2025. It was reconstructed in 2011.

What condition is Fs Route No. 301 over Little NF Clearwater 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 July 2024.

How much traffic does Fs Route No. 301 over Little NF Clearwater carry?

About 40 vehicles per day (2018 count).

How long is Fs Route No. 301 over Little NF Clearwater?

The structure is 64 ft (19.4 m) long with a longest span of 31 ft (9.4 m) and a deck 16 ft wide.

Who owns Fs Route No. 301 over Little NF Clearwater?

It is owned by the U.S. Forest Service.