US Bridges

364th Ave SE over Raging River

Fair

King County, Washington · 6.8 MI E of Issa-Ho · Structure no. 086237000000000

Built
1996
29 years old
Condition
Fair
inspected March 2024
Type
Frame
Concrete
Length
32 ft
1 main span
Daily traffic
170
2024 count
Owner
County
County Highway Agency

About this bridge

364th Ave SE over Raging River is a concrete frame carrying 364th Ave SE over Raging River in King County, Washington. It was built in 1996, so it is 29 years old, younger 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 170 vehicles a day, projected to reach 175 by 2040. The structure is 32 ft (9.8 m) long and 15 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
Carries364th Ave SE
CrossesRaging River
Location6.8 MI E of Issa-Ho
RouteCounty Highway 81540
CountyKing County
StateWashington
Coordinates47.43692, -121.85361
Functional classRural Local

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.1 US tons
Inventory rating51.8 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length32 ft (9.8 m)
Longest span31 ft (9.4 m)
Deck width15 ft (4.6 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic170 (2024)
Projected traffic175 by 2040
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedDeck rehabilitation with only incidental widening
Estimated improvement cost$213,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 364th Ave SE over Raging River built?

It was built in 1996, making it 29 years old in 2025.

What condition is 364th Ave SE over Raging River 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 March 2024.

How much traffic does 364th Ave SE over Raging River carry?

About 170 vehicles per day (2024 count).

How long is 364th Ave SE over Raging River?

The structure is 32 ft (9.8 m) long with a longest span of 31 ft (9.4 m) and a deck 15 ft wide.

Who owns 364th Ave SE over Raging River?

It is owned by the County Highway Agency.