US Bridges

66th ST NE over Little Pilchuck Creek

Good

Snohomish County, Washington · 0.5 N JCT SR 92 · Structure no. 087407000000000

Built
2006
19 years old
Condition
Good
inspected October 2024
Type
Slab
Prestressed Concrete
Length
43 ft
1 main span
Daily traffic
368
2023 count
Owner
County
County Highway Agency

About this bridge

66th ST NE over Little Pilchuck Creek is a prestressed concrete slab carrying 66th ST NE over Little Pilchuck Creek 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 368 vehicles a day, roughly 13% of them trucks, projected to reach 500 by 2046. The structure is 43 ft (13.1 m) long and 20 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Carries66th ST NE
CrossesLittle Pilchuck Creek
Location0.5 N JCT SR 92
RouteCounty Highway 65615
Coordinates48.05608, -122.03741
Functional classRural Local

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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating110.1 US tons
Inventory rating68 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 25 or greater
Structure length43 ft (13.1 m)
Longest span41 ft (12.5 m)
Deck width20 ft (6.1 m)
Roadway width19 ft (5.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic368 (2023)
Projected traffic500 by 2046
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$388,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 66th ST NE over Little Pilchuck Creek built?

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

What condition is 66th ST NE over Little Pilchuck 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 October 2024.

How much traffic does 66th ST NE over Little Pilchuck Creek carry?

About 368 vehicles per day (2023 count), of which roughly 13% are trucks.

How long is 66th ST NE over Little Pilchuck Creek?

The structure is 43 ft (13.1 m) long with a longest span of 41 ft (12.5 m) and a deck 20 ft wide.

Who owns 66th ST NE over Little Pilchuck Creek?

It is owned by the County Highway Agency.