US Bridges

Airport Way over Snohomish R.

Good

Snohomish County, Washington · 1.1 N JCT SR#9 · Structure no. 081565000000000

Built
1983
42 years old
Condition
Good
inspected April 2024
Type
Truss - Thru
Steel
Length
360 ft
1 main span
Daily traffic
16,383
2021 count
Owner
County
County Highway Agency

About this bridge

Airport Way over Snohomish R. is a steel truss - thru carrying Airport Way over Snohomish R. in Snohomish County, Washington. It was built in 1983, so it is 42 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 16,383 vehicles a day, roughly 12% of them trucks, projected to reach 20,000 by 2044. The structure is 360 ft (109.7 m) long and 50 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesAirport Way
CrossesSnohomish R.
Location1.1 N JCT SR#9
RouteCounty Highway 24140
CountySnohomish County
StateWashington
Coordinates47.91019, -122.09871
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating84 US tons
Inventory rating50 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHS 20
Structure length360 ft (109.7 m)
Longest span160 ft (48.8 m)
Deck width50 ft (15.1 m)
Roadway width36 ft (11 m)
Vertical clearance over deck17 ft (5.2 m)

Traffic and service

Average daily traffic16,383 (2021)
Projected traffic20,000 by 2044
Trucks12%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$17.6 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Airport Way over Snohomish R. built?

It was built in 1983, making it 42 years old in 2025.

What condition is Airport Way over Snohomish R. 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 April 2024.

How much traffic does Airport Way over Snohomish R. carry?

About 16,383 vehicles per day (2021 count), of which roughly 12% are trucks.

How long is Airport Way over Snohomish R.?

The structure is 360 ft (109.7 m) long with a longest span of 160 ft (48.8 m) and a deck 50 ft wide.

Who owns Airport Way over Snohomish R.?

It is owned by the County Highway Agency.