US Bridges

Fdr 670 over Washington Creek

Fair

Clearwater County, Idaho · 22 Miles from Pierce Id · Structure no. 010503000000055

Built
1953
72 years old
Condition
Fair
inspected August 2021
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
40 ft
1 main span
Daily traffic
20
Owner
Federal
U.S. Forest Service

About this bridge

Fdr 670 over Washington Creek is a wood or timber stringer/multi-beam or girder carrying Fdr 670 over Washington Creek in Clearwater County, Idaho. It was built in 1953, so it is 72 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 40 ft (12.3 m) long and 15 ft wide.

CarriesFdr 670
CrossesWashington Creek
Location22 Miles from Pierce Id
RouteFederal Lands Road 670
StateIdaho
Coordinates46.59071, -115.60907
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 2021
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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 25 or greater
Structure length40 ft (12.3 m)
Longest span39 ft (12 m)
Deck width15 ft (4.7 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 670 over Washington Creek built?

It was built in 1953, making it 72 years old in 2025.

What condition is Fdr 670 over Washington 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 2021.

How much traffic does Fdr 670 over Washington Creek carry?

About 20 vehicles per day (latest count).

How long is Fdr 670 over Washington Creek?

The structure is 40 ft (12.3 m) long with a longest span of 39 ft (12 m) and a deck 15 ft wide.

Who owns Fdr 670 over Washington Creek?

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