Neighborhood Traffic Calming

Program Overview

The City of Seattle has been working to lower traffic speeds on neighborhood streets since 1978. Since then, we've worked with communities to install thousands of traffic circles, speed humps, and chicanes. We review possible traffic calming locations every year and prioritize streets based on:

  • recorded speeds and traffic volumes,
  • reported crash history,
  • nearby destinations (schools, parks, community centers, libraries, transit stops, etc.),
  • the City of Seattle Race and Social Equity Index, and
  • street design (missing sidewalks, missing curbs, wide travel lanes, etc.).

One of the many traffic calming circles found throughout Seattle. This calming circle features a bed of small pink and white flowers.

If you are interested in a low-cost traffic calming solution for your neighborhood, Parking Management may be an option. If your street only allows parking on one side, allowing parking on both sides of the street can be an effective traffic calming tool. Narrower streets encourage people driving to slow down.

2025 Projects 

Alki (In Design) | Project Fact Sheet

  • 60th Ave SW from SW Admiral Way to Alki Ave SW
  • 61st Ave SW from SW Admiral Way to Alki Ave SW
  • 62nd Ave SW from SW Admiral Way to Alki Ave SW

Bitter Lake (Complete) | Project Fact Sheet

  • N 143rd St from Greenwood Ave N to Aurora Ave N
  • Phinney Ave N from N 143rd St to N 145th St
  • Dayton Ave N from N 143rd St to N 145th St
  • Evanston Ave N from N 143rd St to N 145th St

Little Brook (In Design) | Project Fact Sheet

  • NE 143rd St from 30th Ave NE to Lake City Way NE
  • NE 140th St from 30th Ave NE to 37th Ave NE
  • NE 137th St from 30th Ave NE to 37th Ave NE

Northgate (In Design) | Project Fact Sheet

  • NE 95th St from 1st Ave NE to 5th Ave NE
  • NE 95th St from 8th Ave NE to Roosevelt Way NE
  • 8th Ave NE from NE 96th St to NE 103rd St
  • NE 100th St from 5th Ave NE to Roosevelt Way NE

Rainier Beach (Complete) |Project Fact Sheet

  • 54th Ave S from Renton Ave S to S Roxbury St
  • 57th Ave S from S Roxbury St to Renton Ave S
  • S Norfolk St from Renton Ave S to 59th Ave S

Transportation

Adiam Emery, Interim Director
Address: 700 5th Ave, Suite 3800, Seattle, WA, 98104
Mailing Address: PO Box 34996, Seattle, WA, 98124-4996
Phone: (206) 684-7623
684-Road@seattle.gov

Newsletter Updates

Subscribe

Sign up for the latest updates from Transportation

The Seattle Department of Transportation (SDOT) is on a mission to deliver a transportation system that provides safe and affordable access to places and opportunities for everyone as we work to achieve our vision of Seattle as a thriving, equitable community powered by dependable transportation.