In about 5 years the US 99 tunnel will have been built taking north south traffic parallel and west of I-5 along the Puget Sound shore. It will reduce some of the traffic delays on I-5. One never really knows whether a new highway is a solution -- if you build it it will fill to capacity very soon and will probably go over capacity because of the influx of people to the Eastern Puget Sound Region. In the future there will be a solid residential metropolitan area from Portland, Oregon to Vancouver, British Columbia.
