• Project

SR 18 - Issaquah/Hobart Rd to Deep Creek - Widening

Project overview

We are in the planning stage to widen a 5-mile section of SR 18 east of Issaquah between Issaquah-Hobart Road and Deep Creek. SR 18 is a crucial highway connecting the south Puget Sound area with I-90, the state’s main east-west route. Currently we have funding only for design; there is no funding allocated at this time for construction.

2019 - late 2020s
Project status
$26 million for design only

What to expect

Once construction is funded, we anticipate it will take several construction seasons to complete the work because we will keep the highway open during construction.

WSDOT is proposing to widen five miles of SR 18 to two lanes in each direction between Issaquah/Hobart Road and Deep Creek.