Twin Ports Construction Alliance Twin Ports Construction Alliance Search | Advanced Search | New Members | Coupons and Discounts | All Categories Business & Professional Services >> Labor Management Relations/Consultants Twin Ports Construction Alliance 2002 London Road, Room 111Duluth, MN 55812 (218) 728-6895 | fax: (218) 728-1965 Send a message to: Twin Ports Construction Alliance Your Name: Your Email: Subject: Message: (Date: 1/26/2021)