US Bridges

Stehekin Valley Ro over Stehekin River

Fair

Chelan County, Washington · 12.5 Miles NW of Stehekin · Structure no. 9470012P0000000

Built
1971
54 years old
Condition
Fair
inspected October 2024
Type
Girder and Floorbeam System
Steel
Length
104 ft
1 main span
Daily traffic
10
2019 count
Owner
Federal
National Park Service

About this bridge

Stehekin Valley Ro over Stehekin River is a steel girder and floorbeam system carrying Stehekin Valley Ro over Stehekin River in Chelan County, Washington. It was built in 1971, so it is 54 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 10 vehicles a day, projected to reach 15 by 2039. The structure is 104 ft (31.7 m) long and 18 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesStehekin Valley Ro
CrossesStehekin River
Location12.5 Miles NW of Stehekin
RouteFederal Lands Road 10
Coordinates48.39097, -120.84647
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating38 US tons
Inventory rating27 US tons

Structure

MaterialSteel
DeckWood or timber
Main spans1
Design loadHS 15
Structure length104 ft (31.7 m)
Longest span100 ft (30.5 m)
Deck width18 ft (5.5 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2019)
Projected traffic15 by 2039
Trucks0%
Lanes on structure2
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerNational Park Service
Maintained byNational Park Service
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$68,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Stehekin Valley Ro over Stehekin River built?

It was built in 1971, making it 54 years old in 2025.

What condition is Stehekin Valley Ro over Stehekin 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 October 2024.

How much traffic does Stehekin Valley Ro over Stehekin River carry?

About 10 vehicles per day (2019 count).

How long is Stehekin Valley Ro over Stehekin River?

The structure is 104 ft (31.7 m) long with a longest span of 100 ft (30.5 m) and a deck 18 ft wide.

Who owns Stehekin Valley Ro over Stehekin River?

It is owned by the National Park Service.