US Bridges

Preston Fall City over Raging River

Fair

King County, Washington · 0.25 MI S of SR-202 · Structure no. 086442000000000

Built
1998
27 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
199 ft
1 main span
Daily traffic
9,092
2020 count
Owner
County
County Highway Agency

About this bridge

Preston Fall City over Raging River is a prestressed concrete continuous stringer/multi-beam or girder carrying Preston Fall City over Raging River in King County, Washington. It was built in 1998, so it is 27 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 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 9,092 vehicles a day, roughly 3% of them trucks, projected to reach 12,500 by 2039. The structure is 199 ft (60.7 m) long and 48 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesPreston Fall City
CrossesRaging River
Location0.25 MI S of SR-202
RouteCounty Highway 98906
Coordinates47.56411, -121.88947
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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating26.8 US tons
Inventory rating20.7 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans1 (+1 approach)
Design loadHS 25 or greater
Structure length199 ft (60.7 m)
Longest span117 ft (35.7 m)
Deck width48 ft (14.7 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,092 (2020)
Projected traffic12,500 by 2039
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$4 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Preston Fall City over Raging River built?

It was built in 1998, making it 27 years old in 2025.

What condition is Preston Fall City 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 April 2023.

How much traffic does Preston Fall City over Raging River carry?

About 9,092 vehicles per day (2020 count), of which roughly 3% are trucks.

How long is Preston Fall City over Raging River?

The structure is 199 ft (60.7 m) long with a longest span of 117 ft (35.7 m) and a deck 48 ft wide.

Who owns Preston Fall City over Raging River?

It is owned by the County Highway Agency.