3rd Ave and Denny Way Signal Improvements

July 1, 2021

What's happening now?

Construction of the 3rd Ave and Denny Way Signal Improvements Project is nearing completion!

We are modifying signals, updating existing trolley poles, and reconstruct the triangular block of 3rd Ave, Broad St, and Denny Way to improve transit operation and reliability in this part of downtown.

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Project Description

This project will improve transit operation and accessibility from northbound 3rd Ave to westbound Denny Way through:

  • Modifying signals at 1st Ave and Denny Way, 2nd Ave and Denny Way, and 3rd Ave and Broad St
  • Updating existing transit trolley poles and rewiring trolley lines
  • Modifying the triangular block between 3rd Ave, Broad St, and Denny Way
  • Install new signal at 3rd Ave and Denny Way

A large part of this project is reconstructing the triangular block between 3rd Ave, Broad St, and Denny Way. The new block of 3rd Ave between Broad St and Denny Way will become 2-way with northbound for transit only and southbound continues to serve general traffic. The new design will also include some changes to the curb line and a new transit only signal.

We are working with King County Metro to coordinate updating the existing trolley poles and rewiring the trolleys to new poles.

Project Map

Map showing project area and route along Denny Way between 1st Ave N and Broad St.


This project is funded in part by the 9-year Levy to Move Seattle, approved by voters in 2015, and by King County Metro.


The project is currently in construction and may reach completion as soon as August 2021.

Other SDOT projects in the area


Greg Spotts, Director
Address: 700 5th Ave, Suite 3800, Seattle, WA, 98104
Mailing Address: PO Box 34996, Seattle, WA, 98124-4996
Phone: (206) 684-7623

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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.