US Bridges

Locust Way over Swamp Creek

Good

Snohomish County, Washington · 0.9 MI North King CO Line · Structure no. 088914000000000

Built
2016
9 years old
Condition
Good
inspected March 2023
Type
Tee Beam
Prestressed Concrete
Length
70 ft
1 main span
Daily traffic
11,359
2021 count
Owner
County
County Highway Agency

About this bridge

Locust Way over Swamp Creek is a prestressed concrete tee beam carrying Locust Way over Swamp Creek in Snohomish County, Washington. It was built in 2016, so it is 9 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 11,359 vehicles a day, roughly 6% of them trucks, projected to reach 15,000 by 2045. The structure is 70 ft (21.4 m) long and 47 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesLocust Way
CrossesSwamp Creek
Location0.9 MI North King CO Line
RouteCounty Highway 90135
Coordinates47.78861, -122.25611
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.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating70.8 US tons
Inventory rating49.6 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length70 ft (21.4 m)
Longest span64 ft (19.6 m)
Deck width47 ft (14.3 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,359 (2021)
Projected traffic15,000 by 2045
Trucks6%
Lanes on structure2
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$2.9 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Locust Way over Swamp Creek built?

It was built in 2016, making it 9 years old in 2025.

What condition is Locust Way over Swamp Creek 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 March 2023.

How much traffic does Locust Way over Swamp Creek carry?

About 11,359 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is Locust Way over Swamp Creek?

The structure is 70 ft (21.4 m) long with a longest span of 64 ft (19.6 m) and a deck 47 ft wide.

Who owns Locust Way over Swamp Creek?

It is owned by the County Highway Agency.