US Bridges

SR 20 over Beaver Creek

Good

Okanogan County, Washington · 1.8 E JCT SR 153 · Structure no. 0017131A0000000

Built
2006
19 years old
Condition
Good
inspected July 2023
Type
Slab
Concrete
Length
29 ft
1 main span
Daily traffic
1,388
2023 count
Owner
State
State Highway Agency

About this bridge

SR 20 over Beaver Creek is a concrete slab carrying SR 20 over Beaver Creek in Okanogan County, Washington. It was built in 2006, so it is 19 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 1,388 vehicles a day, roughly 15% of them trucks, projected to reach 1,582 by 2039. The structure is 29 ft (8.7 m) long and 50 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesSR 20
CrossesBeaver Creek
Location1.8 E JCT SR 153
RouteState Highway 20
CountyOkanogan County
StateWashington
Coordinates48.34758, -120.04397
Functional classRural 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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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 rating86 US tons
Inventory rating52 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckOther
Main spans1
Design loadHS 25 or greater
Structure length29 ft (8.7 m)
Longest span29 ft (8.7 m)
Deck width50 ft (15.3 m)
Roadway width36 ft (11.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,388 (2023)
Projected traffic1,582 by 2039
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$420,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 20 over Beaver Creek built?

It was built in 2006, making it 19 years old in 2025.

What condition is SR 20 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 July 2023.

How much traffic does SR 20 over Beaver Creek carry?

About 1,388 vehicles per day (2023 count), of which roughly 15% are trucks.

How long is SR 20 over Beaver Creek?

The structure is 29 ft (8.7 m) long with a longest span of 29 ft (8.7 m) and a deck 50 ft wide.

Who owns SR 20 over Beaver Creek?

It is owned by the State Highway Agency.