US Bridges

Chiwawa Loop Road over Beaver Creek

Good

Chelan County, Washington · No. of Plain · Structure no. 088032000000000

Built
2008
17 years old
Condition
Good
inspected September 2023
Type
Culvert
Prestressed Concrete
Length
26 ft
1 main span
Daily traffic
1,178
2021 count
Owner
County
County Highway Agency

About this bridge

Chiwawa Loop Road over Beaver Creek is a prestressed concrete culvert carrying Chiwawa Loop Road over Beaver Creek in Chelan County, Washington. It was built in 2008, so it is 17 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,178 vehicles a day, roughly 6% of them trucks, projected to reach 1,473 by 2041. The structure is 26 ft (7.9 m) long and 35 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

CarriesChiwawa Loop Road
CrossesBeaver Creek
LocationNo. of Plain
RouteCounty Highway 93300
Coordinates47.76479, -120.65642
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable 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 alignment6: Equal to present minimum criteria
Operating rating52.1 US tons
Inventory rating40 US tons

Structure

Structure typeCulvert
MaterialPrestressed Concrete
DeckNot applicable
Main spans1
Design loadHS 25 or greater
Structure length26 ft (7.9 m)
Longest span24 ft (7.3 m)
Deck width35 ft (10.7 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,178 (2021)
Projected traffic1,473 by 2041
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 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$1.3 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Chiwawa Loop Road over Beaver Creek built?

It was built in 2008, making it 17 years old in 2025.

What condition is Chiwawa Loop Road over Beaver 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 Chiwawa Loop Road over Beaver Creek carry?

About 1,178 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is Chiwawa Loop Road over Beaver Creek?

The structure is 26 ft (7.9 m) long with a longest span of 24 ft (7.3 m) and a deck 35 ft wide.

Who owns Chiwawa Loop Road over Beaver Creek?

It is owned by the County Highway Agency.