US Bridges

Fdr 581 over Toboggan Creek

Good

Clearwater County, Idaho · Road 581 MP 8.2 · Structure no. 010503000003021

Built
2004
21 years old
Condition
Good
inspected July 2020
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
52 ft
1 main span
Daily traffic
5
Owner
Federal
U.S. Forest Service

About this bridge

Fdr 581 over Toboggan Creek is a wood or timber stringer/multi-beam or girder carrying Fdr 581 over Toboggan Creek in Clearwater County, Idaho. It was built in 2004, so it is 21 years old, younger 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 5 vehicles a day, projected to reach 7 by 2045. The structure is 52 ft (15.9 m) long and 16 ft wide. If it were closed, the detour would be 620.7 mi (999 km).

CarriesFdr 581
CrossesToboggan Creek
LocationRoad 581 MP 8.2
RouteFederal Lands Road 581
StateIdaho
Coordinates46.67291, -115.06336
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2020
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.9 US tons
Inventory rating40.7 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadH 20
Structure length52 ft (15.9 m)
Longest span51 ft (15.5 m)
Deck width16 ft (4.9 m)
Roadway width14 ft (4.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5 (—)
Projected traffic7 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 Fdr 581 over Toboggan Creek built?

It was built in 2004, making it 21 years old in 2025.

What condition is Fdr 581 over Toboggan 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 July 2020.

How much traffic does Fdr 581 over Toboggan Creek carry?

About 5 vehicles per day (latest count).

How long is Fdr 581 over Toboggan Creek?

The structure is 52 ft (15.9 m) long with a longest span of 51 ft (15.5 m) and a deck 16 ft wide.

Who owns Fdr 581 over Toboggan Creek?

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