US Bridges

SR 522 over Wildlife Crossing

Good

Snohomish County, Washington · 7.9 E JCT SR 9 · Structure no. 0018128E0000000

Built
2012
13 years old
Condition
Good
inspected May 2024
Type
Slab
Prestressed Concrete
Length
27 ft
1 main span
Daily traffic
15,631
2023 count
Owner
State
State Highway Agency

About this bridge

SR 522 over Wildlife Crossing is a prestressed concrete slab carrying SR 522 over Wildlife Crossing 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 27 ft (8.2 m) long and 128 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesSR 522
CrossesWildlife Crossing
Location7.9 E JCT SR 9
RouteState Highway 522
Coordinates47.83433, -122.02198
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.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating106.8 US tons
Inventory rating106.8 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length27 ft (8.2 m)
Longest span26 ft (7.8 m)
Deck width128 ft (39 m)
Roadway width83 ft (25.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,631 (2023)
Projected traffic21,511 by 2039
Trucks8%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed3.7 mi (6 km)
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$1.1 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 522 over Wildlife Crossing built?

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

What condition is SR 522 over Wildlife Crossing 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 May 2024.

How much traffic does SR 522 over Wildlife Crossing carry?

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

How long is SR 522 over Wildlife Crossing?

The structure is 27 ft (8.2 m) long with a longest span of 26 ft (7.8 m) and a deck 128 ft wide.

Who owns SR 522 over Wildlife Crossing?

It is owned by the State Highway Agency.