US Bridges

Fdr 581 over Cayuse Creek

Fair

Clearwater County, Idaho · 7 MI E of Old Kelly CR Rs · Structure no. 010503000000061

Built
1967
58 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
122 ft
2 main spans
Daily traffic
20
Owner
Federal
U.S. Forest Service

About this bridge

Fdr 581 over Cayuse Creek is a wood or timber stringer/multi-beam or girder carrying Fdr 581 over Cayuse Creek in Clearwater County, Idaho. It was built in 1967, so it is 58 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 20 vehicles a day, projected to reach 30 by 2045. The structure is 122 ft (37.3 m) long and 15 ft wide.

CarriesFdr 581
CrossesCayuse Creek
Location7 MI E of Old Kelly CR Rs
RouteFederal Lands Road 581
StateIdaho
Coordinates46.66773, -115.06779
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 inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating32.5 US tons
Inventory rating25 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans2
Design loadH 20
Structure length122 ft (37.3 m)
Longest span60 ft (18.3 m)
Deck width15 ft (4.6 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (—)
Projected traffic30 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Fdr 581 over Cayuse Creek built?

It was built in 1967, making it 58 years old in 2025.

What condition is Fdr 581 over Cayuse Creek 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 August 2023.

How much traffic does Fdr 581 over Cayuse Creek carry?

About 20 vehicles per day (latest count).

How long is Fdr 581 over Cayuse Creek?

The structure is 122 ft (37.3 m) long with a longest span of 60 ft (18.3 m) and a deck 15 ft wide.

Who owns Fdr 581 over Cayuse Creek?

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