Whittier Access Project, Alaska The Anton Anderson Memorial Tunnel Whittier Access Project.

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Whittier Access Project, Alaska The Anton Anderson Memorial Tunnel Whittier Access Project
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Transcript of Whittier Access Project, Alaska The Anton Anderson Memorial Tunnel Whittier Access Project.

Page 1: Whittier Access Project, Alaska The Anton Anderson Memorial Tunnel Whittier Access Project.

Whittier Access Project, Alaska

The Anton Anderson Memorial Tunnel

Whittier Access Project

Page 2: Whittier Access Project, Alaska The Anton Anderson Memorial Tunnel Whittier Access Project.

Whittier Access Project, Alaska

Outline

Project Background Project Issues Design and Implementation Cost-Benefit Analysis Results Critique

Page 3: Whittier Access Project, Alaska The Anton Anderson Memorial Tunnel Whittier Access Project.

Whittier Access Project, Alaska

Whittier, Alaska

Population: 300 residents Tourist destination for

water recreation and vacationing

Rail port built during WWII to provide a supply link from Prince William Sound to town of Portage

Page 4: Whittier Access Project, Alaska The Anton Anderson Memorial Tunnel Whittier Access Project.

Whittier Access Project, Alaska

History

1943: 2.5 mile RR tunnel constructed through the Maynard Mountain leading to a boom in population growth

1950: military vacated Whittier, then became a federally-run commercial port

Passage to Whittier only via RR flat cars that carry vehicles

Access Project: the tunnel, the new roadway, and two bridges

Page 5: Whittier Access Project, Alaska The Anton Anderson Memorial Tunnel Whittier Access Project.

Whittier Access Project, Alaska

Groups Involved

Alaska Department of Transportation and Public Facilities

Design Builder: Kiewit Construction Lead Consultant: HDR Designer: Hatch Mott MacDonald

Page 6: Whittier Access Project, Alaska The Anton Anderson Memorial Tunnel Whittier Access Project.

Whittier Access Project, Alaska

Project Objectives

Increase access to Whittier Guarantee convenient and

affordable access Improve the safety

measures of the tunnel

Page 7: Whittier Access Project, Alaska The Anton Anderson Memorial Tunnel Whittier Access Project.

Whittier Access Project, Alaska

Alternatives

To increase the existing rail service To use a high-speed electric train To construct a highway route over

Maynard Mountain To construct a highway route through the

tunnel To construct a combined roadway and

railway route through Maynard Mountain and a highway leading to the tunnel

Page 8: Whittier Access Project, Alaska The Anton Anderson Memorial Tunnel Whittier Access Project.

Whittier Access Project, Alaska

Risks and Uncertainties

Weather Design-Build construction method Availability of materials & equipment

Page 9: Whittier Access Project, Alaska The Anton Anderson Memorial Tunnel Whittier Access Project.

Whittier Access Project, Alaska

Tunnel Construction

The existing railroad track and underlying crushed rock were replaced with concrete panels

Rock excavation created space for fans and safehouses for use during emergencies

Walls are natural rock, reinforced with steel plates where necessary

Page 10: Whittier Access Project, Alaska The Anton Anderson Memorial Tunnel Whittier Access Project.

Whittier Access Project, Alaska

Construction Challenges

Snow Tunnel Portals: had to

be built to resist forces of possible avalanches

Tight working conditions

Time constraint: project had to be finished in two years

Keep tunnel in operation

Page 11: Whittier Access Project, Alaska The Anton Anderson Memorial Tunnel Whittier Access Project.

Whittier Access Project, Alaska

Addressing the Challenges

Staging areas A-shaped portals Specialized equipment and methods, detailed

scheduling of machinery sequence Heavy emphasis on partnering, overlapping shifts

to ensure constant on-site monitoring Procedure was practiced outside of tunnel before

actual installation

Page 12: Whittier Access Project, Alaska The Anton Anderson Memorial Tunnel Whittier Access Project.

Whittier Access Project, Alaska

Cash Flow Diagram

Anton Anderson Project: Cash Flow Diagram

$(300,000.00)

$(200,000.00)

$(100,000.00)

$-

$100,000.00

$200,000.00

$300,000.00

$400,000.00

Time

Do

llars

Page 13: Whittier Access Project, Alaska The Anton Anderson Memorial Tunnel Whittier Access Project.

Whittier Access Project, Alaska

Projected Revenue

Projected Annual Revenue

$-

$200,000.00

$400,000.00

$600,000.00

$800,000.00

$1,000,000.00

$1,200,000.00

$1,400,000.00

$1,600,000.00

2001 2002 2003 2004 2005 2006 2007 2008 2009

Year

Re

ve

nu

e [

$]

Page 14: Whittier Access Project, Alaska The Anton Anderson Memorial Tunnel Whittier Access Project.

Whittier Access Project, Alaska

Costs and Benefits

Costs Cost of Construction Loss of full tunnel operations Environmental impacts

Benefits Increased accessibility to Whittier Shorter commute time Economic boost Gain exposure to design-build

Page 15: Whittier Access Project, Alaska The Anton Anderson Memorial Tunnel Whittier Access Project.

Whittier Access Project, Alaska

Results Innovative computerized control and

emergency response systems that regulate rail and vehicle traffic

Can operate in -40o F temperatures and in extreme wind and snow conditions

First tunnel to use both portal and jet fans for ventilation

Page 16: Whittier Access Project, Alaska The Anton Anderson Memorial Tunnel Whittier Access Project.

Whittier Access Project, Alaska

Performance

$57 million dollar tunnel, under $59.6 million contract amount

Early finish date: Fully operational two months ahead of schedule, June 2001

Only combined railroad/highway tunnel in the world

The longest highway tunnel in North America

Page 17: Whittier Access Project, Alaska The Anton Anderson Memorial Tunnel Whittier Access Project.

Whittier Access Project, Alaska

Critique and Conclusions

Design-build allows room for innovation in construction methods

Careful planning and monitoring increase overall project efficiency

End result: substantial decrease in project duration and cost

Page 18: Whittier Access Project, Alaska The Anton Anderson Memorial Tunnel Whittier Access Project.

Whittier Access Project, Alaska

References

ADOT&PF Facility Manager, Mr. Gordon S. Burton http://www.dot.state.ak.us/creg/whittiertunnel/index.htm http://www.kiewit.com/project/pro_5598016.html http://www.auca.org/month/ http://transportation.org/aashto/success.nsf/allpages/

AlaskaWhittierAccess http://www.govwest.com/Whittier_publ.asp http://www.asce.org/pressroom/news/pr043001_ocea.cfm http://www.hdrinc.com/information/default.asp?

PageID=1301&ParentID=3L38

Page 19: Whittier Access Project, Alaska The Anton Anderson Memorial Tunnel Whittier Access Project.

Whittier Access Project, Alaska

Questions?