the anton anderson memorial tunnel l.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
The Anton Anderson Memorial Tunnel PowerPoint Presentation
Download Presentation
The Anton Anderson Memorial Tunnel

Loading in 2 Seconds...

play fullscreen
1 / 19

The Anton Anderson Memorial Tunnel - PowerPoint PPT Presentation


  • 134 Views
  • Uploaded on

The Anton Anderson Memorial Tunnel. Whittier Access Project. Outline. Project Background Project Issues Design and Implementation Cost-Benefit Analysis Results Critique. Whittier, Alaska. Population: 300 residents Tourist destination for water recreation and vacationing

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'The Anton Anderson Memorial Tunnel' - loring


Download Now An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
the anton anderson memorial tunnel

The Anton Anderson Memorial Tunnel

Whittier Access Project

Whittier Access Project, Alaska

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

Whittier Access Project, Alaska

whittier 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

Whittier Access Project, Alaska

history
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

Whittier Access Project, Alaska

groups involved
Groups Involved
  • Alaska Department of Transportation and Public Facilities
  • Design Builder: Kiewit Construction
  • Lead Consultant: HDR
  • Designer: Hatch Mott MacDonald

Whittier Access Project, Alaska

project objectives
Project Objectives
  • Increase access to Whittier
  • Guarantee convenient and affordable access
  • Improve the safety measures of the tunnel

Whittier Access Project, Alaska

alternatives
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

Whittier Access Project, Alaska

risks and uncertainties
Risks and Uncertainties
  • Weather
  • Design-Build construction method
  • Availability of materials & equipment

Whittier Access Project, Alaska

tunnel construction
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

Whittier Access Project, Alaska

construction challenges
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

Whittier Access Project, Alaska

addressing the challenges
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

Whittier Access Project, Alaska

cash flow diagram
Cash Flow Diagram

Whittier Access Project, Alaska

projected revenue
Projected Revenue

Whittier Access Project, Alaska

costs and benefits
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

Whittier Access Project, Alaska

results
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

Whittier Access Project, Alaska

performance
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

Whittier Access Project, Alaska

critique and conclusions
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

Whittier Access Project, Alaska

references
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

Whittier Access Project, Alaska

questions
Questions?

Whittier Access Project, Alaska