Structure 87593000000000 · Skagit County, WA

Riverside Drive over Hoag & Steward ST

Carries Riverside Drive over Hoag & Steward ST, Riverside DR Jct Hoag ST.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructure7/9 · Good
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT60 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 7/9Substructure 7/9

60 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.

Built200323 years old
Length60.0 ft18.3 m
Daily traffic21,640counted 2022
Last inspectedOctober 2023every 24 months

Location

StateWashington
CountySkagit
LocationRiverside DR Jct Hoag ST
CarriesRiverside Drive
CrossesHoag & Steward ST
Coordinates48.44308, -122.33533

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length60.0 ft (18.3 m)
Max Span59.4 ft (18.1 m)
Deck Width71.9 ft (21.9 m)
Deck Area400.8 sq m
Main Spans1
Year Built2003

Traffic

Avg Daily Traffic21,640 (2022)
Truck Traffic5%
Lanes On Bridge4
Lanes Under Bridge2

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number087593000000000

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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