US Bridges

SR 410 over Scatter Creek

Fair

King County, Washington · 6.2 E JCT SR 164 · Structure no. 0007789A0000000

Built
1965
60 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
250 ft
3 main spans
Daily traffic
2,068
2023 count
Owner
State
State Highway Agency

About this bridge

SR 410 over Scatter Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying SR 410 over Scatter Creek in King County, Washington. It was built in 1965, so it is 60 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 2,068 vehicles a day, roughly 8% of them trucks, projected to reach 3,080 by 2039. The structure is 250 ft (76.2 m) long and 32 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesSR 410
CrossesScatter Creek
Location6.2 E JCT SR 164
RouteState Highway 410
CountyKing County
StateWashington
Coordinates47.16181, -121.87533
Functional classRural 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65 US tons
Inventory rating39 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length250 ft (76.2 m)
Longest span100 ft (30.5 m)
Deck width32 ft (9.9 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,068 (2023)
Projected traffic3,080 by 2039
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

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
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 SR 410 over Scatter Creek built?

It was built in 1965, making it 60 years old in 2025.

What condition is SR 410 over Scatter Creek 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 May 2024.

How much traffic does SR 410 over Scatter Creek carry?

About 2,068 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is SR 410 over Scatter Creek?

The structure is 250 ft (76.2 m) long with a longest span of 100 ft (30.5 m) and a deck 32 ft wide.

Who owns SR 410 over Scatter Creek?

It is owned by the State Highway Agency.