US Bridges

SE 68th ST over Raging River

Fair

King County, Washington · 1.9 MI NE of I-90 · Structure no. 083713000000000

Built
1915
110 years old
Condition
Fair
inspected July 2023
Type
Arch - Deck
Concrete
Length
50 ft
1 main span
Daily traffic
15
2023 count
Owner
County
County Highway Agency

About this bridge

SE 68th ST over Raging River is a concrete arch - deck carrying SE 68th ST over Raging River in King County, Washington. It was built in 1915, so it is 110 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 15 vehicles a day, roughly 8% of them trucks, projected to reach 30 by 2043. The structure is 50 ft (15.2 m) long and 26 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesSE 68th ST
CrossesRaging River
Location1.9 MI NE of I-90
RouteCounty Highway 98906
CountyKing County
StateWashington
Coordinates47.53992, -121.90863
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating22.2 US tons
Inventory rating20 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 15
Structure length50 ft (15.2 m)
Longest span45 ft (13.7 m)
Deck width26 ft (7.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15 (2023)
Projected traffic30 by 2043
Trucks8%
Lanes on structure2
Traffic directionTwo-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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2.2 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SE 68th ST over Raging River built?

It was built in 1915, making it 110 years old in 2025.

What condition is SE 68th ST 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 July 2023.

How much traffic does SE 68th ST over Raging River carry?

About 15 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is SE 68th ST over Raging River?

The structure is 50 ft (15.2 m) long with a longest span of 45 ft (13.7 m) and a deck 26 ft wide.

Who owns SE 68th ST over Raging River?

It is owned by the County Highway Agency.