US Bridges

Swamp Creek Road over Naches River

Fair

Yakima County, Washington · Above Whistling Jack · Structure no. 061708000001518

Built
1960
65 years old
Condition
Fair
inspected September 2023
Type
Frame
Concrete Continuous
Length
200 ft
4 main spans
Daily traffic
40
1995 count
Owner
Federal
U.S. Forest Service

About this bridge

Swamp Creek Road over Naches River is a concrete continuous frame carrying Swamp Creek Road over Naches River in Yakima County, Washington. It was built in 1960, so it is 65 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 40 vehicles a day, projected to reach 60 by 2045. The structure is 200 ft (61 m) long and 18 ft wide. If it were closed, the detour would be 5.6 mi (9 km).

Location

Open in Google Maps
CarriesSwamp Creek Road
CrossesNaches River
LocationAbove Whistling Jack
RouteFederal Lands Road 17060
CountyYakima County
StateWashington
Coordinates46.94979, -121.07183
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; action required to protect exposed foundations
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating25 US tons
Inventory rating16 US tons

Structure

Structure typeFrame
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length200 ft (61 m)
Longest span80 ft (24.4 m)
Deck width18 ft (5.6 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (1995)
Projected traffic60 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5.6 mi (9 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 Swamp Creek Road over Naches River built?

It was built in 1960, making it 65 years old in 2025.

What condition is Swamp Creek Road over Naches River 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 Swamp Creek Road over Naches River carry?

About 40 vehicles per day (1995 count).

How long is Swamp Creek Road over Naches River?

The structure is 200 ft (61 m) long with a longest span of 80 ft (24.4 m) and a deck 18 ft wide.

Who owns Swamp Creek Road over Naches River?

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