Structure 13202A0000000 · San Juan County, WA

SR 20 over Harney Channel

Carries SR 20 over Harney Channel, On Orcas Island.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructure6/9 · Satisfactory
Substructure6/9 · Satisfactory
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT105 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 6/9Substructure 6/9

105 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 lift bridge (drawn closed).

Built1979rebuilt 1987
Length105.0 ft32 m
Daily traffic2,150counted 2010
Last inspectedSeptember 2024every 24 months

Location

StateWashington
CountySan Juan
LocationOn Orcas Island
CarriesSR 20
CrossesHarney Channel
Coordinates48.59744, -122.94369

Physical Characteristics

MaterialSteel
DesignMovable - Lift
Total Length105.0 ft (32 m)
Max Span80.1 ft (24.4 m)
Deck Width21.0 ft (6.4 m)
Deck Area204.8 sq m
Main Spans1
Year Built1979 (reconstructed 1987)

Traffic

Avg Daily Traffic2,150 (2010)
Truck Traffic11%
Lanes On Bridge1

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure Number0013202A0000000

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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