Structure 19493D0000000 · Whatcom County, WA

SR 11 over Padden Creek

Carries SR 11 over Padden Creek, 7.0 N Skagit Co.

Overall conditionGood

Set by its lowest-rated component: Culvert at 8 of 9.

How ratings work
Culvertsets the rating8/9 · Very Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
21 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 8/9

A culvert 21 ft across. Lengths are drawn to scale; at this length a semi-truck would be a speck. Each part is colored by its latest inspection rating. The inventory records lengths but not heights, so those are drawn as typical for a culvert.

Built20215 years old
Length21.0 ft6.4 m
Daily traffic14,626counted 2023
Last inspectedAugust 2024every 24 months

Location

StateWashington
CountyWhatcom
Location7.0 N Skagit Co
CarriesSR 11
CrossesPadden Creek
Coordinates48.71458, -122.47861

Physical Characteristics

MaterialPrestressed Concrete
DesignCulvert
Total Length21.0 ft (6.4 m)
Max Span21.0 ft (6.4 m)
Deck Width67.3 ft (20.5 m)
Deck Area131.2 sq m
Main Spans1
Year Built2021

Traffic

Avg Daily Traffic14,626 (2023)
Truck Traffic3%
Lanes On Bridge3

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number0019493D0000000

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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