US Bridges

Old Blewett Road over Peshastin Creek

FairPosted for load

Chelan County, Washington · 0.99W JCT US97 · Structure no. 086825000000000

Built
1977
48 years old
Condition
Fair
inspected September 2024
Type
Channel Beam
Prestressed Concrete
Length
30 ft
1 main span
Daily traffic
26
2020 count
Owner
County
County Highway Agency

About this bridge

Old Blewett Road over Peshastin Creek is a prestressed concrete channel 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 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. Its operating status is: posted for load restriction.

It carries about 26 vehicles a day, projected to reach 33 by 2041. The structure is 30 ft (9.2 m) long and 16 ft wide. If it were closed, the detour would be 24.2 mi (39 km).

CarriesOld Blewett Road
CrossesPeshastin Creek
Location0.99W JCT US97
RouteCounty Highway 30100
Coordinates47.38972, -120.65861
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating35.1 US tons
Inventory rating27.1 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length30 ft (9.2 m)
Longest span29 ft (8.9 m)
Deck width16 ft (4.9 m)
Roadway width15 ft (4.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic26 (2020)
Projected traffic33 by 2041
Trucks0%
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$995,000 (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 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 September 2024.

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

About 26 vehicles per day (2020 count).

How long is Old Blewett Road over Peshastin Creek?

The structure is 30 ft (9.2 m) long with a longest span of 29 ft (8.9 m) and a deck 16 ft wide.

Who owns Old Blewett Road over Peshastin Creek?

It is owned by the County Highway Agency.