Project overview
Dozens of preservation projects are planned to revive Interstate 5 in King and Snohomish counties. Washington’s main freeway was built in the 1960s and needs major preservation and renovation work. Over the coming years, Revive I-5 projects will include pavement repair and full replacement, expansion joints, and seismic work to strengthen bridges against earthquakes.
What to expect
At this time one project is active:
Revive I-5 - Ship Canal Bridge preservation
In general during construction of the various projects, people can expect nighttime lane, ramp and directional closures, as well as weekend-long construction that may include lane reductions, directional closures and full-time lane closures that last several days.
See the "related links" tab for future projects.
Southbound I-5 will have several weekend-long lane reductions through January 2026, leading up to the long-term lane reductions that will start in winter 2026.
When the Seattle section of I-5 was constructed in the 1960s, designers expected it to last about 25 years before needing major work. The freeway held up well for more than 50 years, but by the mid-2010s major preservation projects became necessary.
There was no freeway when I-5 was first built, so it was relatively easy to work with limited effects to traffic. Now I-5 is a lifeline that people and commerce count on every day. Because we can’t simply close it for years to rebuild it, we are creating many different projects to revive it one section at a time.