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Downtown TunnelMidtown Tunnel
MLK Extension
Downtown TunnelMidtown Tunnel
MLK Extension
Virginia Maritime AssociationU.S. Army Corps of Engineers
Hampton Roads Navigational Summit April 4, 2012
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
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Slide 3Hampton Roads Navigational Summit
A new, two-lane tunnel
Refurbishment and safety improvements
Extending MLK to I-264, High St. interchange
New MTT Alignment
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Slide 4Hampton Roads Navigational Summit
New MTT Profile
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Slide 5Hampton Roads Navigational Summit
Typical Tube Section
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Slide 6Hampton Roads Navigational Summit
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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Slide 12Hampton Roads Navigational Summit
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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Slide 22Hampton Roads Navigational Summit
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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Slide 23Hampton Roads Navigational Summit
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Slide 24Hampton Roads Navigational Summit
