US Bridges

SR 203 over Haskell Slough

Fair

Snohomish County, Washington · 5.1 N King CO · Structure no. 0005294A0000000

Built
1957
68 years old
Condition
Fair
inspected April 2024
Type
Slab
Concrete Continuous
Length
254 ft
5 main spans
Daily traffic
15,411
2023 count
Owner
State
State Highway Agency

About this bridge

SR 203 over Haskell Slough is a concrete continuous slab carrying SR 203 over Haskell Slough in Snohomish County, Washington. It was built in 1957, so it is 68 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 15,411 vehicles a day, roughly 9% of them trucks, projected to reach 21,352 by 2039. The structure is 254 ft (77.4 m) long and 36 ft wide. If it were closed, the detour would be 13 mi (21 km).

Location

Open in Google Maps
CarriesSR 203
CrossesHaskell Slough
Location5.1 N King CO
RouteState Highway 203
CountySnohomish County
StateWashington
Coordinates47.84319, -121.96947
Functional classRural Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than 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 rating75.9 US tons
Inventory rating45 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length254 ft (77.4 m)
Longest span56 ft (17.1 m)
Deck width36 ft (11 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,411 (2023)
Projected traffic21,352 by 2039
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed13 mi (21 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$4.8 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 203 over Haskell Slough built?

It was built in 1957, making it 68 years old in 2025.

What condition is SR 203 over Haskell Slough 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 April 2024.

How much traffic does SR 203 over Haskell Slough carry?

About 15,411 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is SR 203 over Haskell Slough?

The structure is 254 ft (77.4 m) long with a longest span of 56 ft (17.1 m) and a deck 36 ft wide.

Who owns SR 203 over Haskell Slough?

It is owned by the State Highway Agency.