US Bridges

Black Canyon Road over Black Canyon Creek

Fair

Okanogan County, Washington · No Data Entered · Structure no. 060804000001023

Built
1965
60 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
30 ft
1 main span
Daily traffic
50
Owner
Federal
U.S. Forest Service

About this bridge

Black Canyon Road over Black Canyon Creek is a wood or timber stringer/multi-beam or girder carrying Black Canyon Road over Black Canyon Creek in Okanogan County, Washington. It was built in 1965, so it is 60 years old, older than the Washington average of 49.8 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 50 vehicles a day, projected to reach 75 by 2045. The structure is 30 ft (9.2 m) long and 16 ft wide. If it were closed, the detour would be 71.5 mi (115 km).

CarriesBlack Canyon Road
CrossesBlack Canyon Creek
LocationNo Data Entered
RouteFederal Lands Road 4010
Coordinates48.07549, -120.01286
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 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 alignment6: Equal to present minimum criteria
Operating rating65.4 US tons
Inventory rating48.7 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadOther
Structure length30 ft (9.2 m)
Longest span29 ft (8.8 m)
Deck width16 ft (4.8 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (—)
Projected traffic75 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed71.5 mi (115 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 proposedDeck rehabilitation with only incidental widening
Estimated improvement cost$6,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Black Canyon Road over Black Canyon Creek built?

It was built in 1965, making it 60 years old in 2025.

What condition is Black Canyon Road over Black Canyon 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 September 2023.

How much traffic does Black Canyon Road over Black Canyon Creek carry?

About 50 vehicles per day (latest count).

How long is Black Canyon Road over Black Canyon Creek?

The structure is 30 ft (9.2 m) long with a longest span of 29 ft (8.8 m) and a deck 16 ft wide.

Who owns Black Canyon Road over Black Canyon Creek?

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