CT AC PROJE CT UPDAT E SE PT E MBE R 19, 2012 www.por - - PowerPoint PPT Presentation

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CT AC PROJE CT UPDAT E

www.por tofmiamitunne l.c om SE PT E MBE R 19, 2012

www.por tofmiamitunne l.c om www.por tofmiamitunne l.c om 90% Equity Partner 10% Equity Partner Contractor VMS Operator Public Sponsors Federal Support

Project Partners

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Scope of Work

Shifting of EB MacArthur Cswy MacArthur Cswy Bridge Widening Twin tunnels under Government Cut Modification of Dodge Island Roadway System

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• Pier construction for

bridge widening

• Inside widening of

both bridges to create additional capacity for tunnel traffic

• 18 Piers and 28 beams
• To date:15 of 19 spans

have been set

MacArthur Causeway Bridge Widening

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Dodge Island – Roadway Improvements

• Construction of Eastbound & Westbound Port Blvd.
• South Cruise Boulevard
• Internal Roadways

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TBM in Launching Pit in median of MacArthur Causeway showing conveyor system that carries excavated material running

• ut of the eastbound tube

and across MacArthur Causeway and dropping into Spoils Management area.

Watson Island – Tunnel Boring Machine (TBM)

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• TBM cutter head with

an outside diameter

• f 42.3 feet (as high

as a 4 story building)

• 361 foot long trailing

support gear made up of 6 gantries

• Total length of the

TBM is 428.5 feet long (more than a football field).

Tunnel Boring Machine (TBM)

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Tunneling Profile Section & Cross Passages

• Tunnels are approximately 4200 ft. long
• +40 ft. under the bottom of Government Cut & approximately

120 ft. below the surface at deepest point

• 5% Grade
• 5 cross passages

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Eastbound Tunnel Interior

Boring Started: November 11, 2011 Breakout on Dodge: July 31, 2012 Rings Installed: 745 Rings Length of Bored Tunnel: 4,186 LF

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• Original plan was to disassemble

TBM and move it back to Watson Island to be reassembled and begin boring the second tunnel.

• Design-Build Team modified the
• riginal concept on Dodge Island

from two portals to a single split

• portal. They also revised the
• perations to mine the second

tunnel from Dodge Island to Watson Island by use of a turntable in the receiving pit on Dodge Island.

TBM inside Dodge Island Receiving Pit

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TBM Turnaround Table

TBM is in the process of being disassembled, turned and reassembled to begin the Westbound Tunnel Mining in October. A Custom Teflon turn table was used to turn the TBM. This method minimizes logistical risks and preserves project schedule.

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TBM Turnaround - Translation

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TBM Turnaround - Rotation

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TBM Turnaround Placement for WB Boring

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Watson Island Tunnel Portal & Conceptual Interior View of Tunnel

• Eastbound MacArthur

Causeway view

• Tunnel Portal Structure

houses the Flood Gates which come down in the event of a storm to prevent flooding of tunnels

• Aesthetic challenge

was the massive size and boxy shape of the structure

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July 31, 2012 – Completion of eastbound tunnel Spring 2013 – Completion of westbound tunnel Spring 2014 – Completion of Dodge Island roadway improvements May 15, 2014 – Substantial Completion - Port of Miami Tunnel opens to traffic, O&M Period begins August 13, 2014 – Final Completion As of 9/13/12 - Construction Days to Date: 1065 of 1765 (55 months) = 60.3% of Design-Build

Project Schedule

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Questions?

For additional project information, please visit our website at: www.portofmiamitunnel.com Project Videos & Gallery