There will be several closures on and around SR 525 from Sunday, July 12 until Friday morning, July 17. See real-time updates in the area on our travel map.
Project overview
Crews working for WSDOT will pave roughly two miles in both directions of State Route 525 from the Interstate 405 interchange to just south of 148th Street Southwest, as well as, eight ramps. The two bridges over Alderwood Mall Parkway and Maple Road will not be paved. Once contractor crews finish grinding and inlaying new HMA (Hot Mix Asphalt), the roadway surface will have a smoother ride that will preserve for years to come.
What to expect
People in the Lynnwood/Alderwood area can expect overnight directional closures of SR 525 and nearby ramps while crews work to repave the highway.
Crews will have closures in three sections of northbound SR 525 Sunday night, July 12, and Wednesday night, July 15. Construction will start at as early as 10 p.m. and finish by 4:30 a.m. the following morning.
During these hours, you can expect the following closures:
- 10 to 11:59 p.m.: Northbound SR 525 between I-5 and Ash Way and the northbound I-405 to southbound I-5 off-ramp.
- 12:01 to 2 a.m.: Northbound SR 525 between Ash Way and just north of Alderwood Mall Parkway, the northbound I-5 ramp to northbound SR 525 and the northbound SR 525 off-ramp to Alderwood Mall Parkway.
- 2 to 4:30 a.m.: Northbound SR 525 between Alderwood Mall Parkway and SR 99, the Alderwood Mall Parkway on-ramp to northbound SR 525 and the northbound I-5 ramp to northbound SR 525.
The following closures begin at 10 p.m. Monday, July 13, and Thursday, July 16, and reopen at 1 a.m. the following morning:
- Southbound SR 525 between Alderwood Mall Parkway and SR 99.
- Southbound I-5 ramp to southbound I-405.
- Southbound SR 99 ramp to southbound SR 525.
- Southbound SR 525 ramp to northbound SR 99.
- Southbound SR 525 off-ramp to Alderwood Mall Parkway.
The following closure is from 1 to 4:30 a.m. Tuesday, July 14, and Friday, July 17:
- Southbound SR 525 between I-5 and Alderwood Mall Parkway.
The following closures begin at 8 p.m. Tuesday, July 14, until 5 a.m. Wednesday, July 15:
- The Alderwood Mall Parkway on-ramp to southbound SR 525.
- The southbound SR 525 off-ramp to southbound I-5/196th Street Southwest.
This work is weather dependent and the schedule may change.
This project will pave and make ADA improvements in both directions of SR 525 from I-405 to just south of 148th Street Southwest.
This section of SR 525 was built in 1984 and was last paved more than 20 years ago in 2004. Preservation work must take place to keep the highway in a state of good repair as the number of travelers using the SR 525 increases.
The asphalt on this stretch of SR 525 has outlived its anticipated 15-year lifespan. Through the years, cracks, ruts, and potholes have developed. These make the roadway uneven, allowing water to pool and reducing tire traction. This causes drivers to slow down to handle the slick conditions, which increases travel times. Removing the old, worn-out asphalt and replacing it with new pavement will provide safer driving conditions and extend the life of the highway.