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Know before you goStarting Monday, Dec. 18, watch for Amtrak Cascades trains running along I-5 as passenger trains begin using the new route. The new route takes trains on an inland corridor parallel to I-5 through Tacoma, Lakewood, Joint Base Lewis-McChord, and DuPont.
The new northbound I-5 auxiliary lane between Mounts Rd and Center Dr is open to traffic.
Get the latest on I-5 construction in Tacoma on the TacomaTraffic.com web page.
Follow @wsdot_tacoma on Twitter to get additional real-time traffic impacts.