City’s new concurrency plan doesn’t measure congestion, overall travel time

By Miki Mullor

Deputy Editor

A new traffic concurrency plan for Sammamish appears unlikely to meet the Sammamish City Council target date to lift the building moratorium in July, despite six months of staff and consultant work and expenditures of about $375,000. (Read more.)

Concurrency is a state law requirement to “​prohibit​ ​development​ ​approval​ ​if​ ​the development​ ​causes​ ​the​ ​level​ ​of​ ​service​ ​on​ ​a​ ​locally​ ​owned​ ​transportation​ ​facility​ ​to​ ​decline​ ​below the​ ​standards​ ​adopted”, unless “​transportation​ ​improvements​ ​or​ ​strategies​ ​to​ ​accommodate​ ​the​ ​impacts​ ​of​ ​development​ ​are made​ ​concurrent​ ​with​ ​the​ ​development “. The law allows development to proceed if “a financial commitment is in place to complete​ ​the​ ​improvements​ ​or​ ​strategies​ ​within​ ​six​ ​years​.”  (see RCW 36.70A.070, and a clean indented version)

Accordingly, cities are required to set a level of service standard for their roads, measure traffic and forecast future impact of development on traffic.  

In response to residents’ frustration over traffic congestion in Sammamish, City Council has enacted a moratorium and directed staff to revise the city’s concurrency system to focus on drivers’ experience.  Continue reading “City’s new concurrency plan doesn’t measure congestion, overall travel time”