I-5 Weekend Lane Reductions in Washington Begin Today, Expect Delays

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Southbound I-5 weekend lane reductions in SeaTac, Des Moines begin Friday, July 15

Work to repave 2.7 miles of southbound Interstate 5 in SeaTac and Des Moines will start a week later than planned. Late last week, the first of five weekends of lane reductions was postponed due to rain.

Pending a dry weather forecast, weekend-long lane reductions will start at 8:00 p.m. Friday night, July 15. Contractor crews working for the Washington State Department of Transportation will reduce I-5 to two lanes between South 188th Street in SeaTac and South 219th Street in Des Moines. All lanes will reopen by 5:00 a.m. Monday, July 18.

“This weekend is busy, with the Seattle Mariners playing at home and the Bite of Seattle taking place, so drivers will need to plan ahead,” said WSDOT Traffic Engineer Mike Swires. “Roughly, 86,000 drivers use this stretch of I-5 every weekend, and drivers will need to plan ahead to avoid long delays and backups.”

Making Up Time

Crews have rescheduled last-weekend’s rain delayed weekend lane reductions for July 29 to August 1. Here’s the updated weekend lane closure schedule:

  • July 15-18
  • July 22-25
  • July 29- Aug. 1
  • August 12-15
  • August 19-22
Weekend Closure Details

During each of the five scheduled weekend lane reductions:

  • Crews will begin closing lanes at 8:00 p.m. Friday, with up to three lanes closed by 10:00 p.m.
  • Drivers should use I-405 and state routes 167 and 509 as alternate routes.
  • Four ramps will be closed during the weekend work, with signed detours: the southbound I- 405 on-ramp to southbound I-5; the South 188th Street on-ramp; the South 200th Street on- and off-ramps.

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