Structure 17131A0000000 · Okanogan County, WA

SR 20 over Beaver Creek

Carries SR 20 over Beaver Creek, 1.8 E Jct SR 153.

Overall conditionGood

Set by its lowest-rated component: Superstructure at 7 of 9.

How ratings work
Deck8/9 · Very Good
Superstructuresets the rating7/9 · Good
Substructure8/9 · Very Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT29 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 7/9 · sets the ratingSubstructure 8/9

29 ft end to end. Lengths and the car on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a slab bridge.

Built200620 years old
Length28.5 ft8.7 m
Daily traffic1,388counted 2023
Last inspectedJuly 2023every 48 months

Location

StateWashington
CountyOkanogan
Location1.8 E Jct SR 153
CarriesSR 20
CrossesBeaver Creek
Coordinates48.34758, -120.04397

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length28.5 ft (8.7 m)
Max Span28.5 ft (8.7 m)
Deck Width50.2 ft (15.3 m)
Deck Area133.1 sq m
Main Spans1
Year Built2006

Traffic

Avg Daily Traffic1,388 (2023)
Truck Traffic15%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical5 — Stable for scour
Structure Number0017131A0000000

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

Nearby Bridges