downtown tunnel midtown tunnel mlk extension
DESCRIPTION
Downtown Tunnel Midtown Tunnel MLK Extension. Virginia Maritime Association U.S. Army Corps of Engineers Hampton Roads Navigational Summit April 4, 2012. Project Team. Project Scope. A new, two-lane tunnel. Extending MLK to I-264, High St. interchange. - PowerPoint PPT PresentationTRANSCRIPT
Downtown TunnelMidtown Tunnel
MLK Extension
Virginia Maritime AssociationU.S. Army Corps of Engineers
Hampton Roads Navigational Summit April 4, 2012
4/4/2012
Slide 2Hampton Roads Navigational Summit
Project Team
Project Scope
4/4/2012
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A new, two-lane tunnel
Refurbishment and safety improvements
Extending MLK to I-264, High St. interchange
New MTT Alignment
4/4/2012
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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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