 Northwest traffic from the High Performance Homes Traffic Center. A big crash in Des Moines on northbound I-5. Blocking two right lanes just before 516. Traffic has backed up past 272nd and still getting worse. And there's more trouble if you're heading north to downtown. Construction on northbound I-5 has the road down to two lanes at Boeing Field. And northbound I-5 is jammed up at the merge with I-90. Drive time from Tacoma to Seattle almost two hours now.