US Bridges

Dugout Mtn RD over Lost Creek

Fair

Okanogan County, Washington · No Data Entered · Structure no. 060803000001002

Built
1981
44 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
35 ft
1 main span
Daily traffic
25
2006 count
Owner
Federal
U.S. Forest Service

About this bridge

Dugout Mtn RD over Lost Creek is a wood or timber stringer/multi-beam or girder carrying Dugout Mtn RD over Lost Creek in Okanogan County, Washington. It was built in 1981, so it is 44 years old, younger 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 25 vehicles a day, projected to reach 37 by 2045. The structure is 35 ft (10.8 m) long and 16 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

CarriesDugout Mtn RD
CrossesLost Creek
LocationNo Data Entered
RouteFederal Lands Road 30005
Coordinates48.48834, -119.01619
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
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 adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.5 US tons
Inventory rating33.3 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 20
Structure length35 ft (10.8 m)
Longest span35 ft (10.7 m)
Deck width16 ft (4.9 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2006)
Projected traffic37 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.2 mi (158 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 Dugout Mtn RD over Lost Creek built?

It was built in 1981, making it 44 years old in 2025.

What condition is Dugout Mtn RD over Lost 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 2024.

How much traffic does Dugout Mtn RD over Lost Creek carry?

About 25 vehicles per day (2006 count).

How long is Dugout Mtn RD over Lost Creek?

The structure is 35 ft (10.8 m) long with a longest span of 35 ft (10.7 m) and a deck 16 ft wide.

Who owns Dugout Mtn RD over Lost Creek?

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