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Alabama Dry-Dock and Shipbuilding Company also builds tunnels. The 3000-foot Mobile River Tunnel for Interstate 10 will be open early in 1972. This tunnel was made in sections approximately 339 feet long, 40 feet high, 84 feet wide...floated to the site and sunk. Fabricator was Alabama Dry-Dock and Shipbuilding Company, using carbon steel plate from United States Steel. When the tough jobs come along, look to us for the quality steels you need. United States Steel, Pittsburgh, Pa. 15230. United States Steel August 15, 1971
