Lots of work is either currency ongoing or coming up that will affect various cycling routes.

*Interurban Trail at 128th ave SE (where it uses the north sidewalk) is currently torn up; I was able to continue through the sidewalk area but it's obviously under construction.

*Interurban Trail on Maple Road, underneath the freeway, will be closed from May - November, with no east alternate route.

*Due to upcoming work on various nearby roads, Seattle Hill road from 35th to 132nd will, when it's paved, become a detour for rerouted traffic. 

Lots of details on these links. The Mill Creek one covers projects by several agencies.

http://www.lynnwoodwa.gov/City-Services/Engineering-Services/Public-Projects-and-Programs/Streets-Projects/Maple-Road-and-Ash-Way-Intersection-Improvements.htm

http://www.lynnwoodwa.gov/City-Services/Engineering-Services/Public-Projects-and-Programs/PedestrianBicycle/Interurban-Trail-Missing-Link---South-Section.htm

http://cityofmillcreek.com/2018construction