US Bridges

S 277th ST over SR 167

Fair

King County, Washington · 3.6 N JCT SR 18 · Structure no. 0008441A0000000

Built
1968
57 years old, rebuilt 2005
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
196 ft
2 main spans
Daily traffic
31,266
2016 count
Owner
State
State Highway Agency

About this bridge

S 277th ST over SR 167 is a prestressed concrete continuous stringer/multi-beam or girder carrying S 277th ST over SR 167 in King County, Washington. It was built in 1968 and reconstructed in 2005, so it is 57 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 31,266 vehicles a day, roughly 5% of them trucks, projected to reach 48,966 by 2038. The structure is 196 ft (59.7 m) long and 103 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesS 277th ST
CrossesSR 167
Location3.6 N JCT SR 18
RouteCity Street 0
CountyKing County
StateWashington
Coordinates47.35369, -122.24511
Functional classUrban Other Principal 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating31.4 US tons
Inventory rating24.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length196 ft (59.7 m)
Longest span96 ft (29.4 m)
Deck width103 ft (31.5 m)
Roadway width90 ft (27.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic31,266 (2016)
Projected traffic48,966 by 2038
Trucks5%
Lanes on structure7
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.9 mi (3 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$8.6 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was S 277th ST over SR 167 built?

It was built in 1968, making it 57 years old in 2025. It was reconstructed in 2005.

What condition is S 277th ST over SR 167 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 S 277th ST over SR 167 carry?

About 31,266 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is S 277th ST over SR 167?

The structure is 196 ft (59.7 m) long with a longest span of 96 ft (29.4 m) and a deck 103 ft wide.

Who owns S 277th ST over SR 167?

It is owned by the State Highway Agency.