US Bridges

SR 525 over Maple RD & Ash Way

Fair

Snohomish County, Washington · 0.4 N JCT I-5 · Structure no. 0011980B0000000

Built
1983
42 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
757 ft
7 main spans
Daily traffic
33,261
2023 count
Owner
State
State Highway Agency

About this bridge

SR 525 over Maple RD & Ash Way is a prestressed concrete continuous stringer/multi-beam or girder carrying SR 525 over Maple RD & Ash Way in Snohomish County, Washington. It was built in 1983, so it is 42 years old, younger 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 33,261 vehicles a day, roughly 4% of them trucks, projected to reach 48,867 by 2039. The structure is 757 ft (230.7 m) long and 69 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesSR 525
CrossesMaple RD & Ash Way
Location0.4 N JCT I-5
RouteState Highway 525
CountySnohomish County
StateWashington
Coordinates47.83603, -122.26931
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating80 US tons
Inventory rating47 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans7
Design loadHS 20 + Mod
Structure length757 ft (230.7 m)
Longest span139 ft (42.4 m)
Deck width69 ft (20.9 m)
Roadway width57 ft (17.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic33,261 (2023)
Projected traffic48,867 by 2039
Trucks4%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes

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$21.6 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR 525 over Maple RD & Ash Way built?

It was built in 1983, making it 42 years old in 2025.

What condition is SR 525 over Maple RD & Ash Way 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 October 2023.

How much traffic does SR 525 over Maple RD & Ash Way carry?

About 33,261 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is SR 525 over Maple RD & Ash Way?

The structure is 757 ft (230.7 m) long with a longest span of 139 ft (42.4 m) and a deck 69 ft wide.

Who owns SR 525 over Maple RD & Ash Way?

It is owned by the State Highway Agency.