Skip to the main content
Sammamish Town Center (not licensed)

2018 Flashing Yellow Arrow Signals

Senior Project Engineer

Jed Ireland
(425) 295 0563

Senior Project Engineer

Jim Grueber
(425) 445 9037


Flashing Yellow Arrow (FYA) turn signals are widely used to improve signal operations and traffic safety. In 2017, the City conducted an FYA feasibility study for all of the city's signalized intersections. The analysis identified intersections that met specific physical configuration and safety criteria making installing FYA left turn signals feasible.

The City installed FYA at five intersections in 2017 and decided to install FYA at up to eight intersections in 2018. The project is currently complete. The table below shows locations where FYA has been installed with this project:

Intersection Completed
1. Sahalee Way NE& NE 37th Way X
2. 228th Ave NE & NE 25th Way X
3. 228th Ave NE & NE 12th Way X
4. 228th Ave NE & NE Inglewood Hill Rd / NE 8th St X
5. E Lake Sammamish Pkwy SE & Louis Thompson Rd NE X
6. 228th Ave& E Main St X
7. 228th Ave SE & SE 4th St / Crusader Way X
8. 228th Ave SE & SE 10th St / Spartan Way X

Project Timeline

  • June 20, 2018 - Design completed
  • June 25, 2018 - Advertised for bidding
  • July 10, 2018 - Bid opening
  • July 17, 2018- Award project
  • July 25, 2018- Pre-construction meeting
  • August 28, 2018 - Begin construction
  • December 2018 - Project completed

Estimated Cost


Project Design

Final Plans
Contract Provisions