US Bridges

NE 10th Street over I-405

Good

King County, Washington · 2.9 N JCT I-90 · Structure no. 0017417A0000000

Built
2009
16 years old
Condition
Good
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
372 ft
2 main spans
Daily traffic
15,000
2010 count
Owner
State
State Highway Agency

About this bridge

NE 10th Street over I-405 is a steel continuous stringer/multi-beam or girder carrying NE 10th Street over I-405 in King County, Washington. It was built in 2009, so it is 16 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 15,000 vehicles a day, roughly 4% of them trucks, projected to reach 24,210 by 2033. The structure is 372 ft (113.4 m) long and 86 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesNE 10th Street
CrossesI-405
Location2.9 N JCT I-90
RouteCity Street 0
CountyKing County
StateWashington
Coordinates47.61928, -122.18942
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 inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73 US tons
Inventory rating44 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length372 ft (113.4 m)
Longest span202 ft (61.6 m)
Deck width86 ft (26.1 m)
Roadway width60 ft (18.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,000 (2010)
Projected traffic24,210 by 2033
Trucks4%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.2 mi (2 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$11 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was NE 10th Street over I-405 built?

It was built in 2009, making it 16 years old in 2025.

What condition is NE 10th Street over I-405 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 November 2023.

How much traffic does NE 10th Street over I-405 carry?

About 15,000 vehicles per day (2010 count), of which roughly 4% are trucks.

How long is NE 10th Street over I-405?

The structure is 372 ft (113.4 m) long with a longest span of 202 ft (61.6 m) and a deck 86 ft wide.

Who owns NE 10th Street over I-405?

It is owned by the State Highway Agency.