US Bridges

64th St. N.E. over Pilchuck River

Good

Snohomish County, Washington · 0.30 E JCT SR 92 · Structure no. 088925000000000

Built
2016
9 years old
Condition
Good
inspected June 2023
Type
Truss - Thru
Steel
Length
184 ft
1 main span
Daily traffic
73
2019 count
Owner
County
County Highway Agency

About this bridge

64th St. N.E. over Pilchuck River is a steel truss - thru carrying 64th St. N.E. over Pilchuck River 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 73 vehicles a day, roughly 22% of them trucks, projected to reach 100 by 2043. The structure is 184 ft (56.1 m) long and 17 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Carries64th St. N.E.
CrossesPilchuck River
Location0.30 E JCT SR 92
RouteCounty Highway 85300
Coordinates48.05348, -122.02405
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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length184 ft (56.1 m)
Longest span180 ft (54.9 m)
Deck width17 ft (5.1 m)
Roadway width15 ft (4.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic73 (2019)
Projected traffic100 by 2043
Trucks22%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$4.8 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 64th St. N.E. over Pilchuck River built?

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

What condition is 64th St. N.E. over Pilchuck River 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 June 2023.

How much traffic does 64th St. N.E. over Pilchuck River carry?

About 73 vehicles per day (2019 count), of which roughly 22% are trucks.

How long is 64th St. N.E. over Pilchuck River?

The structure is 184 ft (56.1 m) long with a longest span of 180 ft (54.9 m) and a deck 17 ft wide.

Who owns 64th St. N.E. over Pilchuck River?

It is owned by the County Highway Agency.