US Bridges

SR 522 over W Main ST (164th ST Se)

Good

Snohomish County, Washington · 9.1 E JCT SR 9 · Structure no. 0018128C0000000

Built
2012
13 years old
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
280 ft
3 main spans
Daily traffic
15,631
2023 count
Owner
State
State Highway Agency

About this bridge

SR 522 over W Main ST (164th ST Se) is a prestressed concrete continuous stringer/multi-beam or girder carrying SR 522 over W Main ST (164th ST Se) in Snohomish County, Washington. It was built in 2012, so it is 13 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 15,631 vehicles a day, roughly 8% of them trucks, projected to reach 21,511 by 2039. The structure is 280 ft (85.3 m) long and 45 ft wide.

Location

Open in Google Maps
CarriesSR 522
CrossesW Main ST (164th ST Se)
Location9.1 E JCT SR 9
RouteState Highway 522
CountySnohomish County
StateWashington
Coordinates47.84853, -122.00814
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74.6 US tons
Inventory rating57.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length280 ft (85.3 m)
Longest span120 ft (36.6 m)
Deck width45 ft (13.7 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,631 (2023)
Projected traffic21,511 by 2039
Trucks8%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes

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$5.9 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR 522 over W Main ST (164th ST Se) built?

It was built in 2012, making it 13 years old in 2025.

What condition is SR 522 over W Main ST (164th ST Se) 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 April 2023.

How much traffic does SR 522 over W Main ST (164th ST Se) carry?

About 15,631 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is SR 522 over W Main ST (164th ST Se)?

The structure is 280 ft (85.3 m) long with a longest span of 120 ft (36.6 m) and a deck 45 ft wide.

Who owns SR 522 over W Main ST (164th ST Se)?

It is owned by the State Highway Agency.