Thanks to an informative Belltown Community Council meeting last week I found out about Seattle Squeeze Part 2 which starts this Saturday March 23rd.
Starting this Saturday all King County Metro buses will be permanently diverted out of the Downtown Seattle Transit Tunnel and on to city streets. They are also going to change 5th & 6th to be bus-only just as 3rd is now during peak hours.
From the information we received it appears the #SeattleSqueeze is going to be a 5 year project. This is also noted below.
Check out the PDF below for more information.