Repair of the Baltimore Harbor Tunnel The original construction of the Baltimore Habour Tunnel began in 1955 and was completed in 1957. By shotcreteweb|2022-02-16T16:58:52+00:00January 6th, 2007| Share This Story, Choose Your Platform! FacebookTwitterRedditLinkedInWhatsAppTumblrPinterestVkEmail About the Author: shotcreteweb