• Project

I-5 - Mounts Rd. to Steilacoom-DuPont Rd. - Corridor Improvements

Project overview

This project is intended to help relieve chronic traffic congestion and improve mobility along I-5 near Joint Base Lewis-McChord. Crews will rebuild the Steilacoom-DuPont Road (Exit 119) interchange and extend I-5 HOV lanes to Mounts Road.

Timeline
2023-2026
Project status
Construction
Funding
$233.3 Million
Project hotline

What to expect

Throughout the project, travelers will see shifted lanes, overnight lane and ramp closures, reduced speed limit in work zones, and potential long-term ramp closures. 

Lane closures on northbound I-5 are permitted overnight at the following times:

  • Monday through Thursday from 7:30 p.m. to 4:30 a.m. each following day.
  • Friday from 8 p.m. to 8 a.m. Saturday.
  • Saturday from 8 p.m. to 8:30 a.m. Sunday.
  • Sunday from 9:30 p.m. to 4:30 a.m. Monday.

Lane closures on southbound I-5 are permitted overnight at the following times:

  • Monday through Thursday from 8 p.m. to 4:30 a.m. each following day.
  • Friday from 9:30 p.m. to 8 a.m. Saturday.
  • Saturday from 8 p.m. to 9 a.m. Sunday.
  • Sunday from 7:30 p.m. to 4:30 a.m. Monday

Road lane closures

Pendleton Avenue

  • One lane of Pendleton Avenue between Main Street and West Way is permitted to close daily from 9 a.m. to 2 p.m. and overnight from 7 p.m. to 5 a.m.

Steilacoom-DuPont Road

  • One lane of Steilacoom-DuPont Road between Barksdale Avenue and Pendleton Avenue is permitted to close overnight between 9 p.m. to 5 a.m.

Wilmington Drive and Barksdale Avenue

  • One lane of Wilmington Drive or Barksdale Avenue at the intersection with Steilacoom-DuPont Road  is permitted to close daily between 9 a.m. to 2 p.m. and overnight from 7 p.m. to 5 a.m.

The project will add HOV lanes to both directions of I-5.

Crews will rebuild the Steilacoom-DuPont Road interchange.The new interchange will connect to Steilacoom-DuPont Road near Pendleton Avenue. Workers will replace the existing at-grade railroad crossing. Crews will build a new bridge. It will carry travelers over the tracks.