US Bridges

236 ST NE over Pilchuck Creek

Fair

Snohomish County, Washington · 0.4 W JCT SR5 · Structure no. 080511000000000

Built
1968
57 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
184 ft
3 main spans
Daily traffic
1,593
2022 count
Owner
County
County Highway Agency

About this bridge

236 ST NE over Pilchuck Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying 236 ST NE over Pilchuck Creek in Snohomish County, Washington. It was built in 1968, so it is 57 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.

It carries about 1,593 vehicles a day, roughly 11% of them trucks, projected to reach 2,500 by 2042. The structure is 184 ft (56.1 m) long and 30 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Carries236 ST NE
CrossesPilchuck Creek
Location0.4 W JCT SR5
RouteCounty Highway 97881
Coordinates48.20994, -122.22617
Functional classRural Minor Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to 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 alignment8: Equal to present desirable criteria
Operating rating46 US tons
Inventory rating34 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length184 ft (56.1 m)
Longest span90 ft (27.4 m)
Deck width30 ft (9.2 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,593 (2022)
Projected traffic2,500 by 2042
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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$7 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 236 ST NE over Pilchuck Creek built?

It was built in 1968, making it 57 years old in 2025.

What condition is 236 ST NE over Pilchuck 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 May 2024.

How much traffic does 236 ST NE over Pilchuck Creek carry?

About 1,593 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is 236 ST NE over Pilchuck Creek?

The structure is 184 ft (56.1 m) long with a longest span of 90 ft (27.4 m) and a deck 30 ft wide.

Who owns 236 ST NE over Pilchuck Creek?

It is owned by the County Highway Agency.