US Bridges

160th/BRICKYARD RD over I-405

Fair

King County, Washington · 7.8 N JCT SR 520 · Structure no. 0008569A0000000

Built
1969
56 years old, rebuilt 1996
Condition
Fair
inspected April 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
292 ft
2 main spans
Daily traffic
30,405
2007 count
Owner
State
State Highway Agency

About this bridge

160th/BRICKYARD RD over I-405 is a prestressed concrete continuous box beam or girders - multiple carrying 160th/BRICKYARD RD over I-405 in King County, Washington. It was built in 1969 and reconstructed in 1996, so it is 56 years old, older than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 30,405 vehicles a day, roughly 5% of them trucks. The structure is 292 ft (89 m) long and 78 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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Carries160th/BRICKYARD RD
CrossesI-405
Location7.8 N JCT SR 520
RouteCity Street 0
CountyKing County
StateWashington
Coordinates47.7425, -122.18747
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66 US tons
Inventory rating40 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length292 ft (89 m)
Longest span154 ft (46.9 m)
Deck width78 ft (23.9 m)
Roadway width66 ft (20.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30,405 (2007)
Projected traffic—
Trucks5%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
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 statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$9.4 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was 160th/BRICKYARD RD over I-405 built?

It was built in 1969, making it 56 years old in 2025. It was reconstructed in 1996.

What condition is 160th/BRICKYARD RD over I-405 in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2024.

How much traffic does 160th/BRICKYARD RD over I-405 carry?

About 30,405 vehicles per day (2007 count), of which roughly 5% are trucks.

How long is 160th/BRICKYARD RD over I-405?

The structure is 292 ft (89 m) long with a longest span of 154 ft (46.9 m) and a deck 78 ft wide.

Who owns 160th/BRICKYARD RD over I-405?

It is owned by the State Highway Agency.