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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 Presentation
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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
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
4/4/2012
Slide 4Hampton Roads Navigational Summit
New MTT Profile
4/4/2012
Slide 5Hampton Roads Navigational Summit
Typical Tube Section
4/4/2012
Slide 6Hampton Roads Navigational Summit
Marine Operations
• Dredging• Screeding• Tube Placement• Security Fill• Ordinary Fill• Armor Stone/Rock Blanket
4/4/2012
Slide 7Hampton Roads Navigational Summit
Clamshell Dredging
4/4/2012
Slide 8Hampton Roads Navigational Summit
Screed Barge
4/4/2012
Slide 9Hampton Roads Navigational Summit
4/4/2012
Slide 10Hampton Roads Navigational Summit
Screed Operation
Tube Placement
4/4/2012
Slide 11Hampton Roads Navigational Summit
Tube Placement
• 11 Tube Elements• Each approx
350 ft long• Portsmouth
to Norfolk
4/4/2012
Slide 12Hampton Roads Navigational Summit
Screed Set #1
4/4/2012
Slide 13Hampton Roads Navigational Summit
Screed Set #2
4/4/2012
Slide 14Hampton Roads Navigational Summit
Screed Set #3
4/4/2012
Slide 15Hampton Roads Navigational Summit
4/4/2012
Slide 16Hampton Roads Navigational Summit
4/4/2012
Slide 17Hampton Roads Navigational Summit
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Slide 18Hampton Roads Navigational Summit
Marine Ops – Linear Schedule
4/4/2012
Slide 19Hampton Roads Navigational Summit
Marine Ops – Linear Schedule 2013
4/4/2012
Slide 20Hampton Roads Navigational Summit
Marine Ops – Linear Schedule 2014
4/4/2012
Slide 21Hampton Roads Navigational Summit
Marine Ops – Linear Schedule 2015
4/4/2012
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
4/4/2012
Slide 23Hampton Roads Navigational Summit
4/4/2012
Slide 24Hampton Roads Navigational Summit