Downtown Tunnel Midtown Tunnel MLK Extension
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Transcript of Downtown Tunnel Midtown Tunnel MLK Extension
Downtown TunnelMidtown Tunnel
MLK Extension
Virginia Maritime AssociationU.S. Army Corps of Engineers
Hampton Roads Navigational Summit April 4, 2012
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Project Team
Project Scope
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A new, two-lane tunnel
Refurbishment and safety improvements
Extending MLK to I-264, High St. interchange
New MTT Alignment
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New MTT Profile
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Typical Tube Section
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Marine Operations
• Dredging• Screeding• Tube Placement• Security Fill• Ordinary Fill• Armor Stone/Rock Blanket
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Clamshell Dredging
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Screed Barge
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Screed Operation
Tube Placement
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Tube Placement
• 11 Tube Elements• Each approx
350 ft long• Portsmouth
to Norfolk
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Screed Set #1
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Screed Set #2
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Screed Set #3
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Marine Ops – Linear Schedule
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Marine Ops – Linear Schedule 2013
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Marine Ops – Linear Schedule 2014
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Marine Ops – Linear Schedule 2015
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Summary of Discussions To Date
• Total Channel Closures (12 each – 48 hr)• Partial Channel Closures (Maintain 220 ft)• Marine Operations Coordinator• Notice to Mariners• Emergency Situations • Good Communication
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