 April 24, 2026
People traveling in Lynnwood and Alderwood should plan for overnight closures of northbound State Route 525 and ramps near the Interstate 5/I-405 interchange beginning Sunday night, April 26 until Friday morning, May 1.
What to expect
Northbound SR 525 will close near the I-405 interchange (milepost 0). Additionally, the northbound I-405 ramp to southbound I-5 will close:
- 10 p.m. Sunday, April 26 to 4:30 a.m. Monday, April 27.
- 10 p.m. to 11:59 p.m. Tuesday, April 28.
- 10 p.m. Wednesday, April 29 to 4:30 a.m. Thursday, April 30.
Northbound SR 525 will close between I-5 and Alderwood Mall Parkway (just south of milepost 1). Additionally, the northbound I-5 ramp to SR 525 and the northbound SR 525 off-ramp to Alderwood Mall Parkway will close:
- 10 p.m. Monday, April 27 to 4:30 a.m. Tuesday, April 28.
- 12:01 a.m. to 4:30 a.m., Wednesday, April 29.
- 10 p.m. Thursday, April 30 to 4:30 a.m. Friday, May 1.
Contractor crews working for the Washington State Department of Transportation will be grinding and repairing pavement as part of the SR 525/I-405 Interchange to SR 99 Vicinity – Paving & ADA project. This project will pave roughly two miles in both directions of SR 525 from the I-405 to just south of 148th Street Southwest, as well as eight ramps in the area.
Drivers should expect delays and follow signed detours or use alternate routes. This work depends on warmer, dry weather and may be rescheduled.
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The SR 526 on-ramp to southbound I-5 will close from 8:30 p.m. on Monday, April 28 to 4 a.m. on Tuesday, April 29.
Crews are preparing overhead signage for the FIFA World Cup in June.
Della Kostelnik Juarez, WSDOT communications
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