US Bridges

Entiat Valley over North Fork Entiat River

Fair

Chelan County, Washington · No Data Entered · Structure no. 061705000001453

Built
1948
77 years old
Condition
Fair
inspected August 2023
Type
Frame
Concrete Continuous
Length
43 ft
1 main span
Daily traffic
100
1995 count
Owner
Federal
U.S. Forest Service

About this bridge

Entiat Valley over North Fork Entiat River is a concrete continuous frame carrying Entiat Valley over North Fork Entiat River in Chelan County, Washington. It was built in 1948, so it is 77 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 100 vehicles a day, roughly 10% of them trucks, projected to reach 150 by 2045. The structure is 43 ft (13 m) long and 14 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

CarriesEntiat Valley
CrossesNorth Fork Entiat River
LocationNo Data Entered
RouteFederal Lands Road 51000
Coordinates47.98745, -120.57883
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 protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69.1 US tons
Inventory rating42 US tons

Structure

Structure typeFrame
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length43 ft (13 m)
Longest span41 ft (12.6 m)
Deck width14 ft (4.3 m)
Roadway width12 ft (3.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (1995)
Projected traffic150 by 2045
Trucks10%
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 Entiat Valley over North Fork Entiat River built?

It was built in 1948, making it 77 years old in 2025.

What condition is Entiat Valley over North Fork Entiat 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 August 2023.

How much traffic does Entiat Valley over North Fork Entiat River carry?

About 100 vehicles per day (1995 count), of which roughly 10% are trucks.

How long is Entiat Valley over North Fork Entiat River?

The structure is 43 ft (13 m) long with a longest span of 41 ft (12.6 m) and a deck 14 ft wide.

Who owns Entiat Valley over North Fork Entiat River?

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