I-5

Route ID
005

Online open house gives overview of changes coming to I-5 at Steilacoom-DuPont Road

Learn about I-5 HOV lane expansion, safety improvements between DuPont and JBLM

DUPONT – Travelers who use Interstate 5 near DuPont and Joint Base Lewis-McChord will want to plan ahead and stay engaged.

A three-year project is now underway on I-5 at Steilacoom-DuPont Road that will bring upgrades to a section of the interstate that sees on average over 140,000 vehicles a day.

File field should be

Southbound I-5 mainline closed in downtown Seattle overnight July 28; traffic to use express lanes

SEATTLE – The southbound Interstate 5 mainline through downtown Seattle will close Friday night, July 28, and all southbound traffic will use the express lanes. Beginning at 11 p.m. Friday, July 28, until 6 a.m. Saturday, July 29, all southbound mainline lanes will close near the Seattle Convention Center for scheduled maintenance.

During the closure, Washington State Department of Transportation maintenance crews will conduct fire system testing under the Convention Center.

Building new bridges over I-5 in SeaTac/Des Moines requires significant traffic shift starting June 26

Nighttime drivers will use cross-over lane while girders are set for new South 216th Street bridge and new flyover ramp

SEATAC – Lifting and carefully placing long pieces of concrete weighing roughly 200,000 pounds is no easy feat, but that is about to happen on Interstate 5 in the SeaTac/Des Moines area.

Slow down on ice and snow.

It's easier to skid or lose control traveling at higher speeds. Give yourself more time to stop.

Carry chains, practice installing them.

Winter conditions could mean chains are required on your route. Practice putting them on your vehicle ahead of time.

Pack your winter car kit.

Carry extra supplies like warm clothing, ice scraper and brush, jumper cables and other emergency items.