In preparation for future SR 520 construction, crews will drill holes later this month in the roadway near the SR 520/I-5 interchange to evaluate the soil and geotechnical conditions within WSDOT’s right of way. This work is planned for the week after Thanksgiving and will occur during nighttime hours to minimize traffic impacts and protect the safety of workers and the traveling public.
WSDOT has received the necessary permits, including a temporary noise variance from the city of Seattle, to complete this work. The work will be performed using construction best management practices and sequenced in a way to minimize the duration and level of noise nearby residents may hear. Nearby neighbors may see lights and hear intermittent noise from drilling equipment.
This work will require nighttime lane and ramp closures. These closures, listed below, will take place from approximately 10 p.m. to 6 a.m. each night:
Monday, Nov. 26
- Crews will close the left lane of the on-ramp from westbound SR 520 to southbound I-5
Tuesday, Nov. 27
- Crews will close the ramp from southbound I-5 to eastbound SR 520
Wednesday, Nov. 28, and Thursday, Nov. 29
- Crews will close the off-ramp from westbound SR 520 to East Roanoke Street
If you have any questions during this work, please call the on-call SR 520 representative at 206-200-9484.