US Bridges

SW Admiral Way over Schmitz Blvd Ravine

Fair

King County, Washington · 5500 SW Admiral Way · Structure no. 085143000000000

Built
1935
90 years old
Condition
Fair
inspected May 2023
Type
Box Beam or Girders - Multiple
Concrete
Length
175 ft
1 main span
Daily traffic
12,500
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

SW Admiral Way over Schmitz Blvd Ravine is a concrete box beam or girders - multiple carrying SW Admiral Way over Schmitz Blvd Ravine in King County, Washington. It was built in 1935, so it is 90 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 5 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 12,500 vehicles a day, roughly 3% of them trucks, projected to reach 15,000 by 2040. The structure is 175 ft (53.3 m) long and 70 ft wide.

Location

Open in Google Maps
CarriesSW Admiral Way
CrossesSchmitz Blvd Ravine
Location5500 SW Admiral Way
RouteCity Street 1140
CountyKing County
StateWashington
Coordinates47.57722, -122.40333
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations on dry land well above flood water elevations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating32.2 US tons
Inventory rating25 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length175 ft (53.3 m)
Longest span175 ft (53.3 m)
Deck width70 ft (21.2 m)
Roadway width54 ft (16.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,500 (2021)
Projected traffic15,000 by 2040
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesOther
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusListed on the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$6.7 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was SW Admiral Way over Schmitz Blvd Ravine built?

It was built in 1935, making it 90 years old in 2025.

What condition is SW Admiral Way over Schmitz Blvd Ravine 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 SW Admiral Way over Schmitz Blvd Ravine carry?

About 12,500 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is SW Admiral Way over Schmitz Blvd Ravine?

The structure is 175 ft (53.3 m) long with a longest span of 175 ft (53.3 m) and a deck 70 ft wide.

Who owns SW Admiral Way over Schmitz Blvd Ravine?

It is owned by the City or Municipal Highway Agency.