US Bridges

SR 522 over US 2 & Bn RR

Good

Snohomish County, Washington · 10.5 E JCT SR 9 · Structure no. 0008857A0000000

Built
1971
54 years old
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
351 ft
4 main spans
Daily traffic
14,192
2023 count
Owner
State
State Highway Agency

About this bridge

SR 522 over US 2 & Bn RR is a prestressed concrete continuous stringer/multi-beam or girder carrying SR 522 over US 2 & Bn RR in Snohomish County, Washington. It was built in 1971, so it is 54 years old, older 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 14,192 vehicles a day, roughly 8% of them trucks, projected to reach 19,817 by 2039. The structure is 351 ft (107 m) long and 52 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesSR 522
CrossesUS 2 & Bn RR
Location10.5 E JCT SR 9
RouteState Highway 522
CountySnohomish County
StateWashington
Coordinates47.86236, -121.98408
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating22.2 US tons
Inventory rating17.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length351 ft (107 m)
Longest span100 ft (30.5 m)
Deck width52 ft (15.8 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,192 (2023)
Projected traffic19,817 by 2039
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and railroad
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 statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$6.7 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR 522 over US 2 & Bn RR built?

It was built in 1971, making it 54 years old in 2025.

What condition is SR 522 over US 2 & Bn RR 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 US 2 & Bn RR carry?

About 14,192 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is SR 522 over US 2 & Bn RR?

The structure is 351 ft (107 m) long with a longest span of 100 ft (30.5 m) and a deck 52 ft wide.

Who owns SR 522 over US 2 & Bn RR?

It is owned by the State Highway Agency.