US Bridges

SR 167 Ramp over SR 18

Fair

King County, Washington · 2.8 N Pierce CO · Structure no. 0009236F0000000

Built
1974
51 years old
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
331 ft
5 main spans
Daily traffic
3,951
2023 count
Owner
State
State Highway Agency

About this bridge

SR 167 Ramp over SR 18 is a prestressed concrete continuous stringer/multi-beam or girder carrying SR 167 Ramp over SR 18 in King County, Washington. It was built in 1974, so it is 51 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 3,951 vehicles a day, roughly 5% of them trucks, projected to reach 6,430 by 2039. The structure is 331 ft (100.9 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSR 167 Ramp
CrossesSR 18
Location2.8 N Pierce CO
RouteState Highway 167
CountyKing County
StateWashington
Coordinates47.30189, -122.25242
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37.8 US tons
Inventory rating29.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20 + Mod
Structure length331 ft (100.9 m)
Longest span90 ft (27.4 m)
Deck width42 ft (12.7 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,951 (2023)
Projected traffic6,430 by 2039
Trucks5%
Lanes on structure2
Traffic directionOne-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 statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$8.8 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR 167 Ramp over SR 18 built?

It was built in 1974, making it 51 years old in 2025.

What condition is SR 167 Ramp over SR 18 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 February 2023.

How much traffic does SR 167 Ramp over SR 18 carry?

About 3,951 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is SR 167 Ramp over SR 18?

The structure is 331 ft (100.9 m) long with a longest span of 90 ft (27.4 m) and a deck 42 ft wide.

Who owns SR 167 Ramp over SR 18?

It is owned by the State Highway Agency.