I-5 - NB S 260th St to Duwamish River Br - Concrete Pavement Rehab and ADA - Driver expectations

Overnight lane and ramp closures Dec. 8-9:
Friday night, Dec. 8 to Saturday morning, Dec. 9
Left lane closures on northbound I-5 will start at 8 p.m. By 10 p.m., three left lanes will be closed. At midnight, a fourth lane will close. All lanes will reopen by 5 a.m.

Saturday night, Dec. 9 to Sunday morning, Dec. 10
Three right lanes of northbound I-5 will begin closing at 8 p.m., along with the following on-ramps to northbound I-5:

  • Southbound Interstate 405 HOV only 
  • Southcenter Boulevard 
  • Interurban Avenue

All lanes and ramps will reopen by 5 a.m. 

Nighttime lane reductions: Work began in April 2017 with crews using overnight lane reductions, mostly on weeknights, to replace concrete panels, grind and pave. Nighttime lane reductions will take place throughout the two years of the project. 

Weekend-long lane reductions: All weekends when northbound I-5 will be reduced to two lanes are finished. Drivers still should be prepared for overnight lane and ramp closures.

Northbound I-5 will remain open at all times, although the number of lanes may be severely limited.