US Bridges

Fdr 581 over Cayuse Creek

Good

Clearwater County, Idaho · 14 Miles from Powell R S · Structure no. 010506000000062

Built
1962
63 years old
Condition
Good
inspected September 2018
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
29 ft
1 main span
Daily traffic
15
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 1962, so it is 63 years old, older than the Idaho average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 15 vehicles a day, projected to reach 22 by 2045. The structure is 29 ft (8.7 m) long and 15 ft wide.

CarriesFdr 581
CrossesCayuse Creek
Location14 Miles from Powell R S
RouteFederal Lands Road 581
StateIdaho
Coordinates46.6658, -115.04198
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2018
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.9 US tons
Inventory rating41.8 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 25 or greater
Structure length29 ft (8.7 m)
Longest span27 ft (8.2 m)
Deck width15 ft (4.7 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15 (—)
Projected traffic22 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 1962, making it 63 years old in 2025.

What condition is Fdr 581 over Cayuse Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2018.

How much traffic does Fdr 581 over Cayuse Creek carry?

About 15 vehicles per day (latest count).

How long is Fdr 581 over Cayuse Creek?

The structure is 29 ft (8.7 m) long with a longest span of 27 ft (8.2 m) and a deck 15 ft wide.

Who owns Fdr 581 over Cayuse Creek?

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