Massive Machine Comes Together To Build Port Tunnel

Port Tunnel Boring Machine 1
Port Tunnel Boring Machine 1
(CBS4) Construction of the new $1 billion Port of Miami tunnel took a giant leap forward Sept. 1 when a critical piece of the giant Tunnel Boring Machine was raised into the air and then lowered into the ground.
Port Tunnel Boring Machine 2
Port Tunnel Boring Machine 2
(CBS4) It's called the“cutter head” which is the most vital part of the tunnel boring machine and will carve the twin tunnels connecting Watson and Dodge Islands.
Port Tunnel Boring Machine 3
Port Tunnel Boring Machine 3
(CBS4) The 43-foot wide, four-story high mechanism was raised into the air by a special 800-ton crane and then lowered into the launching pit in its place as the head of the huge tunneling machine.
Port Tunnel Boring Machine 4
Port Tunnel Boring Machine 4
(CBS4) Ever so slowly, the "cutter-head" was lowered into position.
Port Tunnel Boring Machine 5
Port Tunnel Boring Machine 5
(CBS4) The huge, rotating steel plate will bore through the limestone beneath Biscayne Bay.
Port Tunnel Boring Machine 6
Port Tunnel Boring Machine 6
(CBS4) The entire $45 million boring machine, nicknamed Harriet, will be longer than a football field and about as tall as a four-story building.
Port Tunnel Boring Machine 7
Port Tunnel Boring Machine 7
(CBS4) Crews have been assembling the boring machine in a giant concrete pit in the middle of Watson Island ever since it arrived in parts back in June on a ship from Germany. The machine weighs more than 2,500 tons.
Port Tunnel Boring Machine 8
Port Tunnel Boring Machine 8
(CBS4) When the Tunnel Boring Machine is fully assembled in the launching pit, a dedication ceremony will take place and drilling under Government Cut to the Port of Miami will begin. Drilling is expected to begin in October.
Port Tunnel Boring Machine 9
Port Tunnel Boring Machine 9
(CBS4) The boring machine will dig about four feet an hour which should take it about 6 months to re-emerge at the port on Dodge Island.
Port Tunnel Boring Machine 10
Port Tunnel Boring Machine 10
(CBS4) It will then be partly disassembled, turned around and re-assembled before boring out the separate return tunnel to Watson Island.
Port Tunnel Boring Machine 11
Port Tunnel Boring Machine 11
(CBS4) The tunnel will consist of two tubes featuring two lanes each.
Port Tunnel Boring Machine 12
Port Tunnel Boring Machine 12
(CBS4) The tunnel will consist of two tubes featuring two lanes each.
Port Tunnel Boring Machine 13
Port Tunnel Boring Machine 13
(CBS4) The project is supposed to ease traffic congestion from cargo trucks heading to the Port of Miami.
Port Tunnel Boring Machine 14
Port Tunnel Boring Machine 14
(CBS4) Construction is expected to be complete by May of 2014.
Port Tunnel Boring Machine 15
Port Tunnel Boring Machine 15
(CBS4) When the twin-tube tunnel is completed in 2014, the Tunnel Boring Machine will be dismantled and removed from the site.
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