US Bridges

I-5 over SR 524 SPUR/44th Ave W

Fair

Snohomish County, Washington · 3.0 N JCT SR 104 · Structure no. 0007118A0000000

Built
1963
62 years old, rebuilt 1995
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
245 ft
3 main spans
Daily traffic
84,075
2023 count
Owner
State
State Highway Agency

About this bridge

I-5 over SR 524 SPUR/44th Ave W is a prestressed concrete stringer/multi-beam or girder carrying I-5 over SR 524 SPUR/44th Ave W in Snohomish County, Washington. It was built in 1963 and reconstructed in 1995, so it is 62 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 5 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 84,075 vehicles a day, roughly 6% of them trucks, projected to reach 124,905 by 2039. The structure is 245 ft (74.7 m) long and 71 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-5
CrossesSR 524 SPUR/44th Ave W
Location3.0 N JCT SR 104
RouteInterstate 5
CountySnohomish County
StateWashington
Coordinates47.8135, -122.29269
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating22.5 US tons
Inventory rating17.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length245 ft (74.7 m)
Longest span92 ft (28 m)
Deck width71 ft (21.6 m)
Roadway width68 ft (20.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic84,075 (2023)
Projected traffic124,905 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 statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$8.1 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-5 over SR 524 SPUR/44th Ave W built?

It was built in 1963, making it 62 years old in 2025. It was reconstructed in 1995.

What condition is I-5 over SR 524 SPUR/44th Ave W 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 February 2024.

How much traffic does I-5 over SR 524 SPUR/44th Ave W carry?

About 84,075 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is I-5 over SR 524 SPUR/44th Ave W?

The structure is 245 ft (74.7 m) long with a longest span of 92 ft (28 m) and a deck 71 ft wide.

Who owns I-5 over SR 524 SPUR/44th Ave W?

It is owned by the State Highway Agency.