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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

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

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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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Slide 7Hampton Roads Navigational Summit

Clamshell Dredging

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Slide 8Hampton Roads Navigational Summit

Screed Barge

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Slide 10Hampton Roads Navigational Summit

Screed Operation

Tube Placement

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Slide 11Hampton Roads Navigational Summit

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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Slide 13Hampton Roads Navigational Summit

Screed Set #2

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Screed Set #3

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Slide 15Hampton Roads Navigational Summit

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Slide 16Hampton Roads Navigational Summit

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Slide 17Hampton Roads Navigational Summit

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Slide 18Hampton Roads Navigational Summit

Marine Ops – Linear Schedule

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Slide 19Hampton Roads Navigational Summit

Marine Ops – Linear Schedule 2013

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Marine Ops – Linear Schedule 2014

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Slide 21Hampton Roads Navigational Summit

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

4/4/2012

Slide 23Hampton Roads Navigational Summit

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Slide 24Hampton Roads Navigational Summit