Construction Issues
Maintain shipping Access
routes during Navigation
construction
Land-based &
marine working
Down-time due to Cost
exposed location
Environmen
ASCE – Met Section – Infrastru
NY-NJ Outer Harbor Gateway
Schedule Phased construction
Phasing of Ambrose channel
openings
Prefab. elements
& dry working
Material Huge quantities of
Availability rock & fill
ntal Impacts
ucture Group – Seminar 2009
Gate Construction
Ambrose Channel Gates – Phased Con
- Navigation restricted to half chann
- First gate and control island cons
- After first gate completed, second
Sandy Hook and Rockaway Inlet Gates
- Channel closed throughout cons
- Constructed within cofferdam
ASCE – Met Section – Infrastru
NY-NJ Outer Harbor Gateway
nstruction
nel width during construction phase
structed within cofferdam
d gate constructed within cofferdam
s
struction
ucture Group – Seminar 2009
Causeway Construction
ASCE – Met Section – Infrastru
NY-NJ Outer Harbor Gateway
ucture Group – Seminar 2009
Construction Cost
Ambrose Channel Gate Complex and
Berms (terrain enhancement)
Sandy Hook Gate and
Tunnel
Sluice Gate Complexes
(10)
Causeway
Rockaway Inlet
Gate and Bridge
Relative Cost
ASCE – Met Section – Infrastru
NY-NJ Outer Harbor Gateway
d Road Tunnel
Total = $5.9 billion
$1 billion/mile of causeway
ucture Group – Seminar 2009
Existing Barriers
Oosterschelde barrier, Netherlands
5 mi (2 mi barrier + islands)
Concrete piers with closable steel
sides
Estimated $3.4B ($1.7B/mi)
Opened 1986
Maeslant, Netherlands S
1,200 ft opening
Moveable steel radius arms
Estimated $0.86B ($4.3B/mi)
Opened 1997
Lake Borgne IHNC barrier, New Orleans
Design in progress
Proposed 2 mile width with 150 ft
navigation gates
Estimated $0.7B ($0.35B/mi)
Expected completion 2011
ASCE – Met Section – Infrastru
NY-NJ Outer Harbor Gateway
Thames barrier, United Kingdom
1,700 ft channel
Circular hollow steel segments
rotated between concrete piers
Estimated $1.9B ($5.9B/mi)
Opened 1982
St. Petersburg, Russian Federation
15 mi, across Gulf of Finland / Neva Bay
11 rock and earth embankments,
2 navigation passes (large radius gates),
6 water exchange complexes
Estimated $6.4B ($0.5B/mi)
Expected completion 2010
ucture Group – Seminar 2009
Lake Borgne
St Petersburg
NY-NJ
Oosterscheld
Maeslant
Thames
0.0 0.5 1.0 1.5 2.0 2.5
($ bi
ASCE – Met Section – Infrastru
NY-NJ Outer Harbor Gateway
3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5
illion / mile)
ucture Group – Seminar 2009
Where do we go from here?
Further Development
Gaining political and socio-economic w
Studies to realize benefits, risks and co
Investigation into options
Preferred solution
ASCE – Met Section – Infrastru
NY-NJ Outer Harbor Gateway
will
onsequences (human and financial)
ucture Group – Seminar 2009
Questions
ASCE – Met Section – Infrastru
NY-NJ Outer Harbor Gateway
ucture Group – Seminar 2009
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NY-NJ Outer Harbor Gateway ASCE – Met Section – Infrastructure Grou p – Seminar 2009 Content of Presentation Background Location and Concept
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