US Bridges

SR 167 Flyover over I-405 NB SR 167 NB

Good

King County, Washington · JCT I-405 & SR 167 · Structure no. 0018811C0000000

Built
2018
7 years old
Condition
Good
inspected February 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
1,846 ft
11 main spans
Daily traffic
5,000
2019 count
Owner
State
State Highway Agency

About this bridge

SR 167 Flyover over I-405 NB SR 167 NB is a prestressed concrete stringer/multi-beam or girder carrying SR 167 Flyover over I-405 NB SR 167 NB in King County, Washington. It was built in 2018, so it is 7 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 5,000 vehicles a day, roughly 5% of them trucks, projected to reach 5,500 by 2039. The structure is 1,846 ft (562.7 m) long and 58 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesSR 167 Flyover
CrossesI-405 NB SR 167 NB
LocationJCT I-405 & SR 167
RouteState Highway 167
CountyKing County
StateWashington
Coordinates47.46492, -122.21803
Functional classUrban Principal Arterial - Interstate

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 inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.6 US tons
Inventory rating38.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans11
Design loadHL 93
Structure length1,846 ft (562.7 m)
Longest span174 ft (53 m)
Deck width58 ft (17.7 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,000 (2019)
Projected traffic5,500 by 2039
Trucks5%
Lanes on structure2
Traffic directionTwo-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 statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$43.8 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR 167 Flyover over I-405 NB SR 167 NB built?

It was built in 2018, making it 7 years old in 2025.

What condition is SR 167 Flyover over I-405 NB SR 167 NB 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 February 2023.

How much traffic does SR 167 Flyover over I-405 NB SR 167 NB carry?

About 5,000 vehicles per day (2019 count), of which roughly 5% are trucks.

How long is SR 167 Flyover over I-405 NB SR 167 NB?

The structure is 1,846 ft (562.7 m) long with a longest span of 174 ft (53 m) and a deck 58 ft wide.

Who owns SR 167 Flyover over I-405 NB SR 167 NB?

It is owned by the State Highway Agency.