US Bridges

41st St. over Smith Avenue

Good

Snohomish County, Washington · 0.01 MI East JCT I-5 · Structure no. 087686000000000

Built
2006
19 years old
Condition
Good
inspected November 2024
Type
Channel Beam
Prestressed Concrete
Length
57 ft
1 main span
Daily traffic
2,328
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

41st St. over Smith Avenue is a prestressed concrete channel beam carrying 41st St. over Smith Avenue in Snohomish County, Washington. It was built in 2006, so it is 19 years old, younger than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,328 vehicles a day, roughly 5% of them trucks, projected to reach 2,800 by 2046. The structure is 57 ft (17.4 m) long and 83 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Carries41st St.
CrossesSmith Avenue
Location0.01 MI East JCT I-5
RouteCity Street 420
Coordinates47.96406, -122.19681
Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61 US tons
Inventory rating36 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 25 or greater
Structure length57 ft (17.4 m)
Longest span52 ft (16 m)
Deck width83 ft (25.4 m)
Roadway width68 ft (20.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,328 (2022)
Projected traffic2,800 by 2046
Trucks5%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesOther
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$4.7 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was 41st St. over Smith Avenue built?

It was built in 2006, making it 19 years old in 2025.

What condition is 41st St. over Smith Avenue in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2024.

How much traffic does 41st St. over Smith Avenue carry?

About 2,328 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is 41st St. over Smith Avenue?

The structure is 57 ft (17.4 m) long with a longest span of 52 ft (16 m) and a deck 83 ft wide.

Who owns 41st St. over Smith Avenue?

It is owned by the City or Municipal Highway Agency.