US Bridges

236th ST NE over Unnamed Stream

Good

Snohomish County, Washington · 0.6 E JCT SR5 · Structure no. 089390000000000

Built
2022
3 years old
Condition
Good
inspected September 2023
Type
Culvert
Concrete
Length
22 ft
1 main span
Daily traffic
6,201
2023 count
Owner
County
County Highway Agency

About this bridge

236th ST NE over Unnamed Stream is a concrete culvert carrying 236th ST NE over Unnamed Stream in Snohomish County, Washington. It was built in 2022, so it is 3 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 6,201 vehicles a day, roughly 9% of them trucks, projected to reach 7,500 by 2045. The structure is 22 ft (6.6 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
Carries236th ST NE
CrossesUnnamed Stream
Location0.6 E JCT SR5
RouteCounty Highway 97882
CountySnohomish County
StateWashington
Coordinates48.20992, -122.20084
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.5 US tons
Inventory rating52.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHL 93
Structure length22 ft (6.6 m)
Longest span22 ft (6.6 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,201 (2023)
Projected traffic7,500 by 2045
Trucks9%
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$1.1 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 236th ST NE over Unnamed Stream built?

It was built in 2022, making it 3 years old in 2025.

What condition is 236th ST NE over Unnamed Stream 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 September 2023.

How much traffic does 236th ST NE over Unnamed Stream carry?

About 6,201 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is 236th ST NE over Unnamed Stream?

The structure is 22 ft (6.6 m) long with a longest span of 22 ft (6.6 m).

Who owns 236th ST NE over Unnamed Stream?

It is owned by the County Highway Agency.