Coughlin Porter Lundeen, Inc. Share: Civil EngineeringStructural Engineering Coughlin Porter Lundeen, Inc. Visit Website 801 2nd Ave Ste 900 Seattle, WA 98104-1515 (206) 343-0460 (206) 343-5691 (fax) Map What's Nearby? Distance: 5 10 15 20 25 50 mi.