Structure 81920000000000 · Skagit County, WA

Cape Horn Road over Grandy Creek

Carries Cape Horn Road over Grandy Creek, 2.25 W Jct SR 20.

Overall conditionFair

Set by its lowest-rated component: Deck at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructure6/9 · Satisfactory
Substructure7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT51 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 6/9Substructure 7/9

51 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 multi-beam bridge.

Built196759 years old
Length50.9 ft15.5 m
Daily traffic391counted 2021
Last inspectedMay 2024every 24 months

Location

StateWashington
CountySkagit
Location2.25 W Jct SR 20
CarriesCape Horn Road
CrossesGrandy Creek
Coordinates48.52208, -121.87970

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length50.9 ft (15.5 m)
Max Span48.9 ft (14.9 m)
Deck Width29.9 ft (9.1 m)
Deck Area141.1 sq m
Main Spans1
Year Built1967

Traffic

Avg Daily Traffic391 (2021)
Truck Traffic6%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMay 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical5 — Stable for scour
Structure Number081920000000000

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.

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