US Bridges

468th Ave SE over S Fk Snoqualmie River

Good

King County, Washington · 1.0 MI S of I-90 · Structure no. 087188000000000

Built
2004
21 years old
Condition
Good
inspected May 2023
Type
Truss - Thru
Steel
Length
213 ft
1 main span
Daily traffic
1,510
2022 count
Owner
County
County Highway Agency

About this bridge

468th Ave SE over S Fk Snoqualmie River is a steel truss - thru carrying 468th Ave SE over S Fk Snoqualmie River in King County, Washington. It was built in 2004, so it is 21 years old, younger 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 1,510 vehicles a day, roughly 2% of them trucks, projected to reach 2,725 by 2042. The structure is 213 ft (64.9 m) long and 39 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
Carries468th Ave SE
CrossesS Fk Snoqualmie River
Location1.0 MI S of I-90
RouteCounty Highway 87030
CountyKing County
StateWashington
Coordinates47.4539, -121.71647
Functional classUrban Collector

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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 alignment8: Equal to present desirable criteria
Operating rating30.8 US tons
Inventory rating23.6 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length213 ft (64.9 m)
Longest span205 ft (62.5 m)
Deck width39 ft (11.8 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deck17 ft (5.2 m)

Traffic and service

Average daily traffic1,510 (2022)
Projected traffic2,725 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$8.1 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 468th Ave SE over S Fk Snoqualmie River built?

It was built in 2004, making it 21 years old in 2025.

What condition is 468th Ave SE over S Fk Snoqualmie River 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 May 2023.

How much traffic does 468th Ave SE over S Fk Snoqualmie River carry?

About 1,510 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 468th Ave SE over S Fk Snoqualmie River?

The structure is 213 ft (64.9 m) long with a longest span of 205 ft (62.5 m) and a deck 39 ft wide.

Who owns 468th Ave SE over S Fk Snoqualmie River?

It is owned by the County Highway Agency.