US Bridges

Old Blewett Road over Peshastin Creek

GoodPosted for load

Chelan County, Washington · 0.43 Mi. W. of SR97 · Structure no. 086824000000000

Built
1977
48 years old
Condition
Good
inspected September 2024
Type
Tee Beam
Prestressed Concrete
Length
46 ft
1 main span
Daily traffic
54
2020 count
Owner
County
County Highway Agency

About this bridge

Old Blewett Road over Peshastin Creek is a prestressed concrete tee beam carrying Old Blewett Road over Peshastin Creek in Chelan County, Washington. It was built in 1977, so it is 48 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. Its operating status is: posted for load restriction.

It carries about 54 vehicles a day, roughly 4% of them trucks, projected to reach 80 by 2041. The structure is 46 ft (14 m) long and 16 ft wide. If it were closed, the detour would be 24.2 mi (39 km).

CarriesOld Blewett Road
CrossesPeshastin Creek
Location0.43 Mi. W. of SR97
RouteCounty Highway 30100
Coordinates47.39667, -120.65417
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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating51.5 US tons
Inventory rating39.7 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20 + Mod
Structure length46 ft (14 m)
Longest span45 ft (13.7 m)
Deck width16 ft (4.9 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic54 (2020)
Projected traffic80 by 2041
Trucks4%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed24.2 mi (39 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.4 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Old Blewett Road over Peshastin Creek built?

It was built in 1977, making it 48 years old in 2025.

What condition is Old Blewett Road over Peshastin 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 2024.

How much traffic does Old Blewett Road over Peshastin Creek carry?

About 54 vehicles per day (2020 count), of which roughly 4% are trucks.

How long is Old Blewett Road over Peshastin Creek?

The structure is 46 ft (14 m) long with a longest span of 45 ft (13.7 m) and a deck 16 ft wide.

Who owns Old Blewett Road over Peshastin Creek?

It is owned by the County Highway Agency.