US Bridges

Gill Creek Road over Nason Creek

Good

Chelan County, Washington · 04.0W Coles Corner · Structure no. 081189000000000

Built
1989
36 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
118 ft
1 main span
Daily traffic
45
2021 count
Owner
County
County Highway Agency

About this bridge

Gill Creek Road over Nason Creek is a prestressed concrete stringer/multi-beam or girder carrying Gill Creek Road over Nason Creek in Chelan County, Washington. It was built in 1989, so it is 36 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 45 vehicles a day, projected to reach 64 by 2041. The structure is 118 ft (36 m) long and 28 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesGill Creek Road
CrossesNason Creek
Location04.0W Coles Corner
RouteCounty Highway 38570
CountyChelan County
StateWashington
Coordinates47.78167, -120.83833
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 protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42.1 US tons
Inventory rating25 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length118 ft (36 m)
Longest span116 ft (35.4 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic45 (2021)
Projected traffic64 by 2041
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$4.6 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Gill Creek Road over Nason Creek built?

It was built in 1989, making it 36 years old in 2025.

What condition is Gill Creek Road 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 September 2023.

How much traffic does Gill Creek Road over Nason Creek carry?

About 45 vehicles per day (2021 count).

How long is Gill Creek Road over Nason Creek?

The structure is 118 ft (36 m) long with a longest span of 116 ft (35.4 m) and a deck 28 ft wide.

Who owns Gill Creek Road over Nason Creek?

It is owned by the County Highway Agency.