Structure 16991L0000000 · Snohomish County, WA

41st ST NE over I-5

Carries 41st ST NE over I-5, 4.1 N Jct SR 527.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 8 of 9.

How ratings work
Decksets the rating8/9 · Very Good
Superstructuresets the rating8/9 · Very Good
Substructuresets the rating8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT158 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 8/9

158 ft end to end: about 2 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 multi-beam bridge.

Built200620 years old
Length158.1 ft48.2 m
Daily traffic33,594counted 2016
Last inspectedOctober 2023every 24 months

Location

StateWashington
CountySnohomish
Location4.1 N Jct SR 527
Carries41st ST NE
CrossesI-5
Coordinates47.96414, -122.19947

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length158.1 ft (48.2 m)
Max Span155.8 ft (47.5 m)
Deck Width193.9 ft (59.1 m)
Deck Area2848.6 sq m
Main Spans1
Year Built2006

Traffic

Avg Daily Traffic33,594 (2016)
Truck Traffic7%
Lanes On Bridge6
Lanes Under Bridge9

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number0016991L0000000

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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