Lane and ramp closures on I-5, SR 516 and SR 509 in South King County continue this week
Lane and ramp closures on I-5, SR 516, and SR 509 in South King County will occur from July 14 to July 20, 2025, for maintenance work. This includes nightly lane and ramp closures to facilitate striping, paving, and electrical work as part of the SR 509 Completion Project. Drivers should expect signed detours during the closures.