US Bridges

Eastmont Avenue over Canyon B Drainage

Good

Douglas County, Washington · Canyon B · Structure no. 088534000000000

Built
2012
13 years old
Condition
Good
inspected April 2023
Type
Arch - Deck
Concrete Continuous
Length
597 ft
1 main span
Daily traffic
8,295
2020 count
Owner
County
County Highway Agency

About this bridge

Eastmont Avenue over Canyon B Drainage is a concrete continuous arch - deck carrying Eastmont Avenue over Canyon B Drainage in Douglas County, Washington. It was built in 2012, so it is 13 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 8,295 vehicles a day, roughly 16% of them trucks, projected to reach 8,500 by 2040. The structure is 597 ft (182 m) long and 59 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesEastmont Avenue
CrossesCanyon B Drainage
LocationCanyon B
RouteCounty Highway 92251
Coordinates47.45764, -120.29131
Functional classUrban Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.2 US tons
Inventory rating41.8 US tons

Structure

Structure typeArch - Deck
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans1 (+4 approach)
Design loadHS 20
Structure length597 ft (182 m)
Longest span239 ft (72.8 m)
Deck width59 ft (18.1 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,295 (2020)
Projected traffic8,500 by 2040
Trucks16%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedDeck rehabilitation with only incidental widening
Estimated improvement cost$14.7 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Eastmont Avenue over Canyon B Drainage built?

It was built in 2012, making it 13 years old in 2025.

What condition is Eastmont Avenue over Canyon B Drainage 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 April 2023.

How much traffic does Eastmont Avenue over Canyon B Drainage carry?

About 8,295 vehicles per day (2020 count), of which roughly 16% are trucks.

How long is Eastmont Avenue over Canyon B Drainage?

The structure is 597 ft (182 m) long with a longest span of 239 ft (72.8 m) and a deck 59 ft wide.

Who owns Eastmont Avenue over Canyon B Drainage?

It is owned by the County Highway Agency.