Tunneling operations will soon start at the UW light rail station. Sound Transit will be installing utility settlement monitors that will be visible from Highway 520 to oncoming traffic. This work will not interfere with vehicle or pedestrian traffic but does require the use of a vacuum truck and a drill rig. The may be audible to the surrounding homes.
Here are the days and hours that you may hear noise:
Monday, April 11 to Friday, April 15: 7:00 a.m. to 6:00 p.m.
Saturday, April 16 and Saturday, April 23: 8:00 a.m. to 10:00 p.m.
You can always track the project here.