US Bridges

116th ST NE over I-5

Good

Snohomish County, Washington · 3.3 N JCT SR 528 · Structure no. 002005070000000

Built
2016
9 years old
Condition
Good
inspected October 2023
Type
Girder and Floorbeam System
Prestressed Concrete Continuous
Length
158 ft
2 main spans
Daily traffic
9,808
2012 count
Owner
State
State Highway Agency

About this bridge

116th ST NE over I-5 is a prestressed concrete continuous girder and floorbeam system carrying 116th ST NE over I-5 in Snohomish County, Washington. It was built in 2016, so it is 9 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 9,808 vehicles a day, roughly 5% of them trucks, projected to reach 15,457 by 2036. The structure is 158 ft (48.2 m) long and 220 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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Carries116th ST NE
CrossesI-5
Location3.3 N JCT SR 528
RouteCounty Highway 0
CountySnohomish County
StateWashington
Coordinates48.1, -122.185
Functional classUrban Minor Arterial

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 inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.1 US tons
Inventory rating35.4 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length158 ft (48.2 m)
Longest span74 ft (22.6 m)
Deck width220 ft (67.1 m)
Roadway width102 ft (31.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,808 (2012)
Projected traffic15,457 by 2036
Trucks5%
Lanes on structure6
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$16.4 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was 116th ST NE over I-5 built?

It was built in 2016, making it 9 years old in 2025.

What condition is 116th ST NE over I-5 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 116th ST NE over I-5 carry?

About 9,808 vehicles per day (2012 count), of which roughly 5% are trucks.

How long is 116th ST NE over I-5?

The structure is 158 ft (48.2 m) long with a longest span of 74 ft (22.6 m) and a deck 220 ft wide.

Who owns 116th ST NE over I-5?

It is owned by the State Highway Agency.