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Transcript of 2UJDQL]DWLRQ $$&( ,QWHUQDWLRQDO ±6HDWWOH 6HFWLRQ … · Microsoft PowerPoint - 2019-01-10 AACE...
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Organization
Date
January 10, 2019
AACE International – Seattle SectionAWV Program Update and Program Management Lessons LearnedDavid Sowers PE – Deputy Administrator, WSDOTHarry Jarnagan PE CCP – Former Program Manager, Mott MacDonaldBrian Smith CCP PMP – Former PC Manager & Current PM, Mott MacDonald
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TODAY’S FOCUS
• The big picture• #Realign99 closure/
Tunnel opening• Removing the viaduct and remaining construction• Program Management Lessons Learned
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The viaduct was built in the early 1950’s
Columns reinforced after 2001 earthquake
This is a safety project
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Completed projects
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TODAY’S FOCUS
• The big picture• #Realign99 closure/
Tunnel opening• Removing the viaduct and remaining construction• Program Management Lessons Learned
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Program schedule
2018 Early 2019
Jan. 4: • On- and off-ramps
near stadiums closeJan. 11: • Full SR 99 closure
begins• Finish eight ramps
to/from new tunnel• Realign SR 99 into
new tunnel• Tunnel grand opening
celebration
SR 99 closure Work begins
Feb*:• Viaduct removal• Closing and filling Battery
Street Tunnel• Rebuilding three blocks of
Aurora Avenue North
Tunnel preparation
Fall 2018:• Switch Alaskan Way travel
lanes west (complete)• Complete tunnel systems
testing• Operations, maintenance
and emergency responder staff training
• Preparatory tunnel on- and off-ramp work
Feb*: • Closure ends and SR
99 tunnel opens• SR 99 NB off-ramp to
downtown and Alaskan Way opens
Tunnel opens
*Closure is approximately three weeks long but duration will depend on progress.
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• Duration: about three-weeks for SR 99 closure and up to three weeks of ramp closures
• Closing a highway adds more drivers to other parts of the system: 90,000 vehicles per day, including several thousand trucks, and buses have to use another route
SR 99 closure and tunnel opening
• Expect long backups: On I-5 and routes into downtown Seattle, especially during peak commute times
• Major change to transportation system: New SR 99 tunnel will open, other construction continues
Scheduled to begin January 11, 2019
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Connecting SR 99 to the tunnel: Crews will have to work in the path of SR 99’s current configuration to connect SR 99 to the new tunnel. The graphics below show the path of SR 99 today (yellow) and work zones during the closure (orange).
Why close SR 99 for three weeks?
South SR 99 tunnel portal North SR 99 tunnel portal
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Opening the tunnel: Ramps at the south portal
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New SR 99 ramps at the north portal – Looking north
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BUDGET overview
= $3.3 billion
WSDOT’s contract with Seattle Tunnel Partners & CM$1.5 billionOther SR 99
tunnel related projects & RW$700 million
Other project contracts & PM$1.1 billion
Federal$787 million
24%
State$2.2 billion
66%
Local$336 million
10%
Uses
Sources
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Cost Estimate and Risk Validation Process
PM Lessons Learned
• Cost Estimate – Decentralized vs Centralized
• Risk Development and Unification of cost and schedule through Probablistic Risk Review (CEVP®)
• Establishing Baseline
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Cost Estimate and Risk Validation Process
PM Lessons Learned
• Cost Estimate – Decentralized vs Centralized
• Risk Development and Unification of cost and schedule through Probabilistic Risk Review (CEVP®)
• Establishing Baseline