(Converted from Microsoft PowerPoint Presentation, approximate slide layout retained)
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Opening the New Woodrow Wilson Memorial Bridge:
Planning & Implementing a Major Traffic Switch
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Scott C. Crumley, P.E., P.T.O.E.
Project Manager
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March 26, 2009
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Agenda
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Woodrow Wilson
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Bridge Project
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Project Background The Major Milestone:
Opening the New Wilson Bridge to Traffic Challenges & Risks Planning & Implementing Highlights
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Project Location
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Project Limits
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Old Woodrow Wilson Bridge
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Opened in 1961
6 lanes with narrow shoulders
Design Year Traffic Volume: 75,000 (reached in 8 yrs)
High accident location
~8 hours of congestion/day
45 yr old structure in need of replacement
Current Traffic Volume: ~195,000
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New Woodrow Wilson Bridge
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1st Half opened in Summer 2006 2nd Half opened in Fall 2008
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Local / Express System
10 lanes w/ full shoulders plus future lane / rail
Projected 2020
Volume: 295,000
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The 2006 Major Milestone: A Critical Part of the Construction Program
I-95 North (Outer Loop) Switch: June 9th weekend I-95 South (Inner Loop) Switch: July 14th weekend
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Key WWB Program Challenges
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• High Profile Switch in Nation's Capital Region
• High Traffic Volumes: I-95 East Coast Corridor
• Multiple Contractors in Maryland and Virginia
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Program Risks
Switch was critical to the WWB Program
Minimum time to implement switch: 6 weeks
■ I-95 North switch, construct crossovers, I-95 South switch
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Cost and Delays to individual contractors
■ Resolving claims for being 63 days past original switch timeframe
■ However, float in program schedule Safety - Major paving and MOT efforts
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Implementation Risks
• Excessive Traffic Impacts (Sat/Sun afternoons)
• Inability to reopen I-95 to full capacity by 5AM Monday
• Equipment Failure
• Material Accessibility / Deliveries
• Unplanned Work and Schedule Impacts
• Inclement Weather
• Emergency Vehicle Accessibility
• Staff / Worker Excessive Heat Issues
• Hour by hour planning
KEY: CONTINGENCY PLANNING
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Perspective Prior to the Switch
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I-95 / I-495 Looking East from Virginia into Maryland towards the Potomac River
(S. Washington St urban deck in foreground)
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Planning & Implementation Highlights
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Coordination with Multiple Public Agencies & Contractors
Federal, State and Local agencies throughout Washington DC metropolitan area
Other agencies involved along alternate routes (e.g. MdTA at Nice Bridge)
Five Major Prime Construction Contractors ($47 to $210 million)
Corridor Coordination Meetings
Hour by hour schedule w/ links
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Detailed Risk Assessment
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Traffic Switch Graphics
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Alternate routes graphic
Sequential graphic essential for effective planning with agencies & contractors
Various press release graphics
• lane & ramp closures
• detour routes
RESULT: Early
understanding of scope and clear; consistent message to public
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Traffic Switch Graphic Sample
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Traffic Switch Graphic Sample
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Pre-Traffic Switch Planning
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Pre-Traffic Switch Traffic Analyses Updated traffic data for 1-95 & ramps
• Comprehensive hourly data sheet from 8PM Friday to 5AM Monday for each switch weekend
• Analyzed traffic impacts w/ various diversion rates: Queue lengths, delay, merge / diverge points, signal timing adjustments
• QuickZone, HCS, Synchro, Critical Lane
• RESULT: Modified detour routes to avoid LOS F; Clear public outreach message of quantifiable impacts & diversion needed
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Pre-Traffic Switch Planning
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Pre-Traffic Switch Construction Activities
Construct / install as much as possible beforehand
• Pre-staging materials and equipment
• Risk assessment led to backup equipment and materials (equipment failure, weather, etc.)
• RESULT: Led to achieving completion of the switches more than 20 hours before 5AM Monday
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Public Outreach
Briefings to Elected Officials
• Relationships built over time —► trust —► excellent conduit to prepare officials/constituents
NO SURPRISES! Public Outreach Message: STAY AWAY!
• Traffic analyses provided backbone of message DVD animation (9,000 distributed) & website
• Over 15 million reached by 120 news stories
• RESULT:
• I-95 North Average/Peak Diversion: 57% / 90%
• I-95 South Average/Peak Diversion: 64% / 82%
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Public Outreach
Regional Static Signs
• Installed during I-95 South switch in July
• SB & WB approaches to compliment CMS
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ITS & Incident Mgmt Resources
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Agency ITS Resources Used extensively in MD, DC and VA
• Highway Advisory Radio (GA to CT)
• TRANSCOM (NY, NJ, CT)
• I-95 Corridor Coalition (ME to FL)
IM Resources
• State Police and Emergency Patrols increased
• "CB Wizard"
• CapWIN
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Project Command Center
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Call-in Center Real time traffic updates
• Construction progress updates
• Alternative route info
• Received 148 and 268 calls during each weekend
Operated 20 hrs/day during 1-95 South switch weekend in July
RESULT: Provided an outlet for motorists to obtain real time information; very well received especially by out-of-state motorists
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Traffic Switch Monitoring
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RESULT: Real-time progress updates to media; Quick resolution to potential issues
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Post-Traffic Switch Evaluations
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Documented summary of the results of each weekend switch, including:
■ Hourly queue lengths and delays
■ Travel times through work zone
■ Accidents
■ Hourly volumes and speeds along I-95 in VA
■ Diversion rates
■ Lessons learned
RESULT: Detailed account of switch weekends for media inquiries and use in future switches
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Planning & Implementation Summary
Coordination with Agencies and Contractors Traffic Switch Graphics
Pre-Traffic Switch Planning (Traffic Analyses & Construction)
Public Outreach
ITS & IM Resources
Project Command Center
Traffic Switch Monitoring
Post-Traffic Switch Evaluations
RESULT: Successful Traffic Switch!
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Moving On.... Demo of Steel Girders: August 28, 2006
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