Highway 99: Weekend-long southbound shutdown in June; nighttime closures this summer

The state has just laid out its plan for major summertime road work, and that includes Highway 99 just north of West Seattle. First, a busy weekend of regional work will include a shutdown of southbound 99 between Denny Way and the WS Bridge, 10 pm Friday, June 6, until (no later than) 5 am Monday, June 9. This, WSDOT says, is “to shift southbound traffic onto a new route through the State Route 99 tunnel project site.” That same weekend, two lanes of northbound I-5 will be closed just north of the WS Bridge for more expansion-joint work, and the 520 Bridge across Lake Washington will be closed, so that first weekend of June might be a great time to just not try to leave the peninsula.

WSDOT also has announced Highway 99 work that will include nighttime closures in the late summer:

This project will replace 81 concrete panels on the aged stretch of Highway 99 in the area shown above, between the West Seattle Bridge and the remaining elevated Alaskan Way Viaduct. From the project webpage:

In summer 2014, contractor crews will repair 81 concrete panels in both directions of State Route 99, between South Spokane and South Holgate streets in Seattle’s SODO neighborhood. Crews also will grind down 198,000 square feet, approximately three and a half football fields, of wheel ruts. This project is similar to concrete grinding and replacement work we have done on I-5 in Kent, Seattle near the Ship Canal Bridge, and I-405 near Bellevue.

What can drivers expect?

• Weekend and weeknight lane closures in both directions of SR 99 between South Spokane and South Holgate streets

Right now, that work is not expected to start until August. Watch our weekday traffic coverage for reminders about upcoming projects as well as day-to-day updates.

3 Replies to "Highway 99: Weekend-long southbound shutdown in June; nighttime closures this summer"

  • KT May 29, 2014 (10:07 am)

    Seriously? This is my problem with WDOT & SDOT. Both Hwy 99 and I-5 project have to be completed on the same weekend at the beginning of June? Was there any consideration of the ramifications or just the usual ‘it will be painful but you’ll like it when we are done’?

  • WGA May 29, 2014 (1:14 pm)

    These projects actually compliment each other in that one is southbound and the other northbound. If both were on roads in the same direction, it would be a problem.
    Also, the Mariners and Sounders are out of town that weekend so it makes sense to schedule work at that time.

  • M May 29, 2014 (2:10 pm)


    As one is a state highway and the other an interstate freeway, these are both WSDOT projects.

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