US Bridges

Deep Creek Road over Copper Creek

Fair

Yakima County, Washington · Past Bumping Lake · Structure no. 061708000001522

Built
1940
85 years old, rebuilt 1944
Condition
Fair
inspected August 2023
Type
Girder and Floorbeam System
Steel
Length
54 ft
1 main span
Daily traffic
20
1995 count
Owner
Federal
U.S. Forest Service

About this bridge

Deep Creek Road over Copper Creek is a steel girder and floorbeam system carrying Deep Creek Road over Copper Creek in Yakima County, Washington. It was built in 1940 and reconstructed in 1944, so it is 85 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 5 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 54 ft (16.6 m) long and 13 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

Location

Open in Google Maps
CarriesDeep Creek Road
CrossesCopper Creek
LocationPast Bumping Lake
RouteFederal Lands Road 18080
CountyYakima County
StateWashington
Coordinates46.81322, -121.30629
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations on dry land well above flood water elevations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating37 US tons
Inventory rating27 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length54 ft (16.6 m)
Longest span49 ft (14.9 m)
Deck width13 ft (4.1 m)
Roadway width12 ft (3.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (1995)
Projected traffic30 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$4,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Deep Creek Road over Copper Creek built?

It was built in 1940, making it 85 years old in 2025. It was reconstructed in 1944.

What condition is Deep Creek Road over Copper 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 2023.

How much traffic does Deep Creek Road over Copper Creek carry?

About 20 vehicles per day (1995 count).

How long is Deep Creek Road over Copper Creek?

The structure is 54 ft (16.6 m) long with a longest span of 49 ft (14.9 m) and a deck 13 ft wide.

Who owns Deep Creek Road over Copper Creek?

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