US Bridges

124th Ave NE over Lake Stevens Outflow

Good

Snohomish County, Washington · 0.01 S North Lksh DR · Structure no. 086046000000000

Built
1993
32 years old
Condition
Good
inspected October 2023
Type
Slab
Prestressed Concrete
Length
41 ft
1 main span
Daily traffic
6,560
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

124th Ave NE over Lake Stevens Outflow is a prestressed concrete slab carrying 124th Ave NE over Lake Stevens Outflow in Snohomish County, Washington. It was built in 1993, so it is 32 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 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 6,560 vehicles a day, roughly 5% of them trucks, projected to reach 8,000 by 2045. The structure is 41 ft (12.4 m) long and 39 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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Carries124th Ave NE
CrossesLake Stevens Outflow
Location0.01 S North Lksh DR
RouteCity Street 660
CountySnohomish County
StateWashington
Coordinates48.01484, -122.06411
Functional classUrban Collector

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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating88.2 US tons
Inventory rating52.9 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length41 ft (12.4 m)
Longest span40 ft (12.2 m)
Deck width39 ft (12 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,560 (2022)
Projected traffic8,000 by 2045
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.8 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 124th Ave NE over Lake Stevens Outflow built?

It was built in 1993, making it 32 years old in 2025.

What condition is 124th Ave NE over Lake Stevens Outflow 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 October 2023.

How much traffic does 124th Ave NE over Lake Stevens Outflow carry?

About 6,560 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is 124th Ave NE over Lake Stevens Outflow?

The structure is 41 ft (12.4 m) long with a longest span of 40 ft (12.2 m) and a deck 39 ft wide.

Who owns 124th Ave NE over Lake Stevens Outflow?

It is owned by the City or Municipal Highway Agency.