US Bridges

I-5 over W-S W-W S-E Ramps

Fair

Snohomish County, Washington · 1.3 N JCT SR 529 · Structure no. 0008085C0000000

Built
1967
58 years old, rebuilt 2007
Condition
Fair
inspected July 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
252 ft
4 main spans
Daily traffic
62,161
2023 count
Owner
State
State Highway Agency

About this bridge

I-5 over W-S W-W S-E Ramps is a concrete continuous box beam or girders - multiple carrying I-5 over W-S W-W S-E Ramps in Snohomish County, Washington. It was built in 1967 and reconstructed in 2007, so it is 58 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 62,161 vehicles a day, roughly 6% of them trucks, projected to reach 91,632 by 2039. The structure is 252 ft (76.8 m) long and 69 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI-5
CrossesW-S W-W S-E Ramps
Location1.3 N JCT SR 529
RouteInterstate 5
Coordinates47.98046, -122.1882
Functional classUrban Principal Arterial - Interstate

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.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65 US tons
Inventory rating39 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length252 ft (76.8 m)
Longest span105 ft (32 m)
Deck width69 ft (21 m)
Roadway width67 ft (20.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic62,161 (2023)
Projected traffic91,632 by 2039
Trucks6%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$8.3 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-5 over W-S W-W S-E Ramps built?

It was built in 1967, making it 58 years old in 2025. It was reconstructed in 2007.

What condition is I-5 over W-S W-W S-E Ramps 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 July 2024.

How much traffic does I-5 over W-S W-W S-E Ramps carry?

About 62,161 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is I-5 over W-S W-W S-E Ramps?

The structure is 252 ft (76.8 m) long with a longest span of 105 ft (32 m) and a deck 69 ft wide.

Who owns I-5 over W-S W-W S-E Ramps?

It is owned by the State Highway Agency.