US Bridges

SR 529 over SR 529/E Marine View DR

Good

Snohomish County, Washington · 4.5 N JCT SR 529 Spur · Structure no. 0004788B0000000

Built
1955
70 years old
Condition
Good
inspected August 2024
Type
Slab
Concrete Continuous
Length
64 ft
2 main spans
Daily traffic
16,286
2023 count
Owner
State
State Highway Agency

About this bridge

SR 529 over SR 529/E Marine View DR is a concrete continuous slab carrying SR 529 over SR 529/E Marine View DR in Snohomish County, Washington. It was built in 1955, so it is 70 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 16,286 vehicles a day, roughly 6% of them trucks, projected to reach 24,967 by 2039. The structure is 64 ft (19.5 m) long and 50 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesSR 529
CrossesSR 529/E Marine View DR
Location4.5 N JCT SR 529 Spur
RouteState Highway 529
CountySnohomish County
StateWashington
Coordinates48.01164, -122.19039
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 inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37.5 US tons
Inventory rating28.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length64 ft (19.5 m)
Longest span31 ft (9.4 m)
Deck width50 ft (15.1 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,286 (2023)
Projected traffic24,967 by 2039
Trucks6%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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$1.4 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR 529 over SR 529/E Marine View DR built?

It was built in 1955, making it 70 years old in 2025.

What condition is SR 529 over SR 529/E Marine View DR 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 August 2024.

How much traffic does SR 529 over SR 529/E Marine View DR carry?

About 16,286 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is SR 529 over SR 529/E Marine View DR?

The structure is 64 ft (19.5 m) long with a longest span of 31 ft (9.4 m) and a deck 50 ft wide.

Who owns SR 529 over SR 529/E Marine View DR?

It is owned by the State Highway Agency.