US Bridges

Peshastin Main ST over Wenatchee River

Poor

Chelan County, Washington · 0.01 NE of SR 2 · Structure no. 082242000000000

Built
1931
94 years old, rebuilt 1975
Condition
Poor
inspected August 2023
Type
Arch - Deck
Concrete
Length
356 ft
3 main spans
Daily traffic
3,489
2020 count
Owner
County
County Highway Agency

About this bridge

Peshastin Main ST over Wenatchee River is a concrete arch - deck carrying Peshastin Main ST over Wenatchee River in Chelan County, Washington. It was built in 1931 and reconstructed in 1975, so it is 94 years old, older than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 3,489 vehicles a day, roughly 8% of them trucks, projected to reach 4,364 by 2040. The structure is 356 ft (108.5 m) long and 36 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

CarriesPeshastin Main ST
CrossesWenatchee River
Location0.01 NE of SR 2
RouteCounty Highway 94310
Coordinates47.56755, -120.60543
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating28.5 US tons
Inventory rating21.8 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3 (+6 approach)
Design loadHS 20
Structure length356 ft (108.5 m)
Longest span107 ft (32.6 m)
Deck width36 ft (10.9 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,489 (2020)
Projected traffic4,364 by 2040
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed8.7 mi (14 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$13.2 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Peshastin Main ST over Wenatchee River built?

It was built in 1931, making it 94 years old in 2025. It was reconstructed in 1975.

What condition is Peshastin Main ST over Wenatchee River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2023.

How much traffic does Peshastin Main ST over Wenatchee River carry?

About 3,489 vehicles per day (2020 count), of which roughly 8% are trucks.

How long is Peshastin Main ST over Wenatchee River?

The structure is 356 ft (108.5 m) long with a longest span of 107 ft (32.6 m) and a deck 36 ft wide.

Who owns Peshastin Main ST over Wenatchee River?

It is owned by the County Highway Agency.