US Bridges

W Garfield ST over 15th Ave W

Fair

King County, Washington · 1600 15th Ave W · Structure no. 085411000000000

Built
1957
68 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
905 ft
1 main span
Daily traffic
19,500
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

W Garfield ST over 15th Ave W is a prestressed concrete stringer/multi-beam or girder carrying W Garfield ST over 15th Ave W in King County, Washington. It was built in 1957, so it is 68 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 19,500 vehicles a day, roughly 10% of them trucks, projected to reach 22,865 by 2040. The structure is 905 ft (275.8 m) long and 25 ft wide.

Location

Open in Google Maps
CarriesW Garfield ST
Crosses15th Ave W
Location1600 15th Ave W
RouteCity Street 1140
CountyKing County
StateWashington
Coordinates47.6336, -122.37621
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment6: Equal to present minimum criteria
Operating rating36 US tons
Inventory rating20.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1 (+16 approach)
Design loadHS 20
Structure length905 ft (275.8 m)
Longest span96 ft (29.3 m)
Deck width25 ft (7.6 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,500 (2022)
Projected traffic22,865 by 2040
Trucks10%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2.3 million (2020 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was W Garfield ST over 15th Ave W built?

It was built in 1957, making it 68 years old in 2025.

What condition is W Garfield ST over 15th Ave W 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 May 2023.

How much traffic does W Garfield ST over 15th Ave W carry?

About 19,500 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is W Garfield ST over 15th Ave W?

The structure is 905 ft (275.8 m) long with a longest span of 96 ft (29.3 m) and a deck 25 ft wide.

Who owns W Garfield ST over 15th Ave W?

It is owned by the City or Municipal Highway Agency.