US Bridges

S-S Ramp over SR 167 Ramp

Good

King County, Washington · 1.3 N JCT SR 181 · Structure no. 0016145A0000000

Built
2002
23 years old
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
505 ft
4 main spans
Daily traffic
27,736
2016 count
Owner
State
State Highway Agency

About this bridge

S-S Ramp over SR 167 Ramp is a steel continuous stringer/multi-beam or girder carrying S-S Ramp over SR 167 Ramp in King County, Washington. It was built in 2002, so it is 23 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 27,736 vehicles a day, roughly 2% of them trucks, projected to reach 43,437 by 2038. The structure is 505 ft (154 m) long and 28 ft wide.

Location

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CarriesS-S Ramp
CrossesSR 167 Ramp
Location1.3 N JCT SR 181
RouteInterstate 405
CountyKing County
StateWashington
Coordinates47.46842, -122.21633
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMay 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 rating97 US tons
Inventory rating58 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 25 or greater
Structure length505 ft (154 m)
Longest span158 ft (48.2 m)
Deck width28 ft (8.6 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic27,736 (2016)
Projected traffic43,437 by 2038
Trucks2%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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$7 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was S-S Ramp over SR 167 Ramp built?

It was built in 2002, making it 23 years old in 2025.

What condition is S-S Ramp over SR 167 Ramp 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 May 2023.

How much traffic does S-S Ramp over SR 167 Ramp carry?

About 27,736 vehicles per day (2016 count), of which roughly 2% are trucks.

How long is S-S Ramp over SR 167 Ramp?

The structure is 505 ft (154 m) long with a longest span of 158 ft (48.2 m) and a deck 28 ft wide.

Who owns S-S Ramp over SR 167 Ramp?

It is owned by the State Highway Agency.