US Bridges

SW Admiral Way over Ravine Fairmount Ave

Good

King County, Washington · Fairmount Ave SW · Structure no. 085166000000000

Built
1949
76 years old
Condition
Good
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
298 ft
5 main spans
Daily traffic
32,000
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

SW Admiral Way over Ravine Fairmount Ave is a steel continuous stringer/multi-beam or girder carrying SW Admiral Way over Ravine Fairmount Ave in King County, Washington. It was built in 1949, so it is 76 years old, older 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 32,000 vehicles a day, roughly 5% of them trucks, projected to reach 48,000 by 2040. The structure is 298 ft (90.8 m) long and 34 ft wide.

CarriesSW Admiral Way
CrossesRavine Fairmount Ave
LocationFairmount Ave SW
RouteCity Street 1140
Coordinates47.58111, -122.38222
Functional classUrban Other Principal Arterial

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 inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54 US tons
Inventory rating42 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans5 (+2 approach)
Design loadH 20
Structure length298 ft (90.8 m)
Longest span84 ft (25.6 m)
Deck width34 ft (10.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic32,000 (2020)
Projected traffic48,000 by 2040
Trucks5%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway and pedestrian
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$644,000 (2018 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was SW Admiral Way over Ravine Fairmount Ave built?

It was built in 1949, making it 76 years old in 2025.

What condition is SW Admiral Way over Ravine Fairmount Ave 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 April 2024.

How much traffic does SW Admiral Way over Ravine Fairmount Ave carry?

About 32,000 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is SW Admiral Way over Ravine Fairmount Ave?

The structure is 298 ft (90.8 m) long with a longest span of 84 ft (25.6 m) and a deck 34 ft wide.

Who owns SW Admiral Way over Ravine Fairmount Ave?

It is owned by the City or Municipal Highway Agency.