US Bridges

164th Street SE over North Creek

FairPosted for load

Snohomish County, Washington · 0.2 W JCT SR 527 · Structure no. 085785000000000

Built
1967
58 years old, rebuilt 1989
Condition
Fair
inspected August 2023
Type
Tee Beam
Concrete
Length
29 ft
1 main span
Daily traffic
36,800
2015 count
Owner
City
City or Municipal Highway Agency

About this bridge

164th Street SE over North Creek is a concrete tee beam carrying 164th Street SE over North Creek in Snohomish County, Washington. It was built in 1967 and reconstructed in 1989, so it is 58 years old, older than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 36,800 vehicles a day, roughly 7% of them trucks, projected to reach 40,300 by 2035. The structure is 29 ft (8.8 m) long and 76 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Carries164th Street SE
CrossesNorth Creek
Location0.2 W JCT SR 527
RouteCity Street 778
Coordinates47.84942, -122.22204
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating26.5 US tons
Inventory rating16.4 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckOther
Main spans1
Design loadHS 20
Structure length29 ft (8.8 m)
Longest span28 ft (8.5 m)
Deck width76 ft (23.2 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic36,800 (2015)
Projected traffic40,300 by 2035
Trucks7%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2.7 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 164th Street SE over North Creek built?

It was built in 1967, making it 58 years old in 2025. It was reconstructed in 1989.

What condition is 164th Street SE over North Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in August 2023.

How much traffic does 164th Street SE over North Creek carry?

About 36,800 vehicles per day (2015 count), of which roughly 7% are trucks.

How long is 164th Street SE over North Creek?

The structure is 29 ft (8.8 m) long with a longest span of 28 ft (8.5 m) and a deck 76 ft wide.

Who owns 164th Street SE over North Creek?

It is owned by the City or Municipal Highway Agency.