US Bridges

CO RD 29890 over Peshastin Creek

Good

Chelan County, Washington · 0.07S JCT US97 · Structure no. 083733000000000

Built
1983
42 years old
Condition
Good
inspected September 2024
Type
Tee Beam
Prestressed Concrete
Length
97 ft
1 main span
Daily traffic
116
2020 count
Owner
County
County Highway Agency

About this bridge

CO RD 29890 over Peshastin Creek is a prestressed concrete tee beam carrying CO RD 29890 over Peshastin Creek in Chelan County, Washington. It was built in 1983, so it is 42 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 116 vehicles a day, roughly 4% of them trucks, projected to reach 184 by 2041. The structure is 97 ft (29.6 m) long and 25 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesCO RD 29890
CrossesPeshastin Creek
Location0.07S JCT US97
RouteCounty Highway 29890
Coordinates47.55333, -120.60167
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 protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations on dry land well above flood water elevations
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 alignment8: Equal to present desirable criteria
Operating rating49.6 US tons
Inventory rating38.3 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20 + Mod
Structure length97 ft (29.6 m)
Longest span92 ft (28.1 m)
Deck width25 ft (7.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic116 (2020)
Projected traffic184 by 2041
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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 statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$3.9 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was CO RD 29890 over Peshastin Creek built?

It was built in 1983, making it 42 years old in 2025.

What condition is CO RD 29890 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 CO RD 29890 over Peshastin Creek carry?

About 116 vehicles per day (2020 count), of which roughly 4% are trucks.

How long is CO RD 29890 over Peshastin Creek?

The structure is 97 ft (29.6 m) long with a longest span of 92 ft (28.1 m) and a deck 25 ft wide.

Who owns CO RD 29890 over Peshastin Creek?

It is owned by the County Highway Agency.