Structure 82030000000000 · Skagit County, WA

Conc Sauk Valley R over Skagit River

Carries Conc Sauk Valley R over Skagit River, 1.5 S Jct SR 20.

Overall conditionFair

Set by its lowest-rated component: Superstructure at 6 of 9.

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT506 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 7/9

506 ft end to end, longest span 300 ft: about 7 semi-trucks nose to tail. Lengths and the semi-truck 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 through arch.

Built195274 years old
Length505.9 ft154.2 m
Daily traffic2,562counted 2020
Last inspectedMarch 2024every 24 months

Location

StateWashington
CountySkagit
Location1.5 S Jct SR 20
CarriesConc Sauk Valley R
CrossesSkagit River
Coordinates48.52472, -121.77133

Physical Characteristics

MaterialSteel Continuous
DesignArch - Thru
Total Length505.9 ft (154.2 m)
Max Span299.9 ft (91.4 m)
Deck Width32.2 ft (9.8 m)
Deck Area1511.2 sq m
Main Spans3
Year Built1952

Traffic

Avg Daily Traffic2,562 (2020)
Truck Traffic6%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMarch 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is on the National Register of Historic Places
Scour Critical9 — Foundation above flood level
Structure Number082030000000000

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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