US Bridges

White Pine Creek over Nason Creek

Good

Chelan County, Washington · No Data Entered · Structure no. 061706000001432

Built
1980
45 years old
Condition
Good
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
60 ft
1 main span
Daily traffic
75
1995 count
Owner
Federal
U.S. Forest Service

About this bridge

White Pine Creek over Nason Creek is a prestressed concrete stringer/multi-beam or girder carrying White Pine Creek over Nason Creek in Chelan County, Washington. It was built in 1980, so it is 45 years old, younger than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 75 vehicles a day, projected to reach 112 by 2045. The structure is 60 ft (18.3 m) long and 16 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

CarriesWhite Pine Creek
CrossesNason Creek
LocationNo Data Entered
RouteFederal Lands Road 69500
Coordinates47.783, -120.87634
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating55.8 US tons
Inventory rating38.6 US tons

Structure

MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length60 ft (18.3 m)
Longest span56 ft (17.1 m)
Deck width16 ft (4.8 m)
Roadway width14 ft (4.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (1995)
Projected traffic112 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 White Pine Creek over Nason Creek built?

It was built in 1980, making it 45 years old in 2025.

What condition is White Pine Creek over Nason Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2023.

How much traffic does White Pine Creek over Nason Creek carry?

About 75 vehicles per day (1995 count).

How long is White Pine Creek over Nason Creek?

The structure is 60 ft (18.3 m) long with a longest span of 56 ft (17.1 m) and a deck 16 ft wide.

Who owns White Pine Creek over Nason Creek?

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