Planning for Resiliency June 20, 2017 Richard Tetreault, PE WSP USA Office Lead VT, NH, and ME
23,000 years ago there would have been more than 8,000 feet of glacier over our heads 2
Provide for the safe and efficient movement of people and goods. 3
The transportation system is a complex network of infrastructure, vehicles, power sources, communications, and human capital. When we speak of resilience in the transportation sense, we mean the ability of the transportation system to recover and regain functionality after a major disruption or disaster. AASHTO SCOR, 2016 4
Champlain Bridge 5
August 28, 2011
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The Flood Rochester Dummerston Plymouth Bennington Pittsfield Mendon Killington 8
Tropical Storm Irene Stats 9 Six lives lost Thirteen Vermont communities isolated 2000 road segments damaged 300 bridges damaged Over 3500 homes and businesses damaged Several rail and major telecommunication lines damaged
Moretown North Main Street - Waterbury Waitsfield 10
Irene Lessons Learned and Actions Today Swift Response Communication Strong Organizational Structure & Goals Partnerships & Collaboration Across Sectors Rebuild for the Future: Resilience Understand our Vulnerabilities 11
Rivers Roads 1 2
US 4
Tornado Volcano Oxidation Freeze/thaw Earthquake Rock slides 14
Operations Engineering Planning 15
Rivers & Roads Both need resilience Incident Command System ICS Be at the ready to transform immediately Transportation System Management & Operations TSM&O Communication Communication Communication 16
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ICS Incident Commander Safety Officer Information Officer Liaisons Operations Planning Logistics Administration District Garages Utilities Communications Time Resident Engineers Inspectors Supplies/ Equipment Procurement Contracts Private Contractors RPCs Facilities Compensation Claims Bills Staging Areas Environmental Hazmat Food Basic Needs Records National Guard Town Crews 18
Rivers and Roads Training VTrans Hydraulics Manual Update Agency of Natural Resources Stream Alterations Permit Town Highway Road & Bridge Standards FEMA & FHWA ER now on the same page Accelerate Bridge Program 19
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Rivers & Roads Vulnerability Assessment - Know the environment you are in and where you may be in the future Contracting/Business Task Team Fiscal Resiliency draw down available federal emergency funds Stakeholder Relationships & Engagement Communicate Regularly Institutionalize Interagency Coordination 21
VULNERABILITY Watershed and River Corridor Analysis 10-year, 50-year, and 100-year floods Road or Structure Failure Mode CRITICALITY Road Segments, Bridges, and Culvert Transportation Network Disruption Simulations Consequences of Failure RISK Mitigation Resiliency App Watershed Resiliency Plans VTrans Prioritization Updates Project Report 23 November 30, 2016
INUNDATION EROSION & DEPOSITION Impact Long Term Structural Failure Temporary Structural Failure Full Operational Closure Partial Operational Closure Vulnerability Potential 10 9 8 7 6 5 4 3 2 1 Determined for 10, 50 and 100 year floods 24
Statewide River Corridor Coverage Stream Geomorphic Assessments LiDAR Local and State Culvert & Bridge Inventories Typical roadway GIS data Typical natural features GIS data FEMA Floodplain Mapping Estimated Floodplains based on soils FEMA Public Assistance Worksheets FHWA Detailed Damage Inspection Reports 25
There are areas of roadway instability triggered by TS Irene that are not programmed for stabilization. LiDAR data is critical for facilitating sound flood recovery and flood vulnerability mapping efforts. Statewide LiDAR data collection for flood vulnerability mapping should be prioritized based on physical settings as well as flood damage history. Q100 velocity or shear stress are likely the best predictors of flood vulnerability in 3 rd and 4 th order streams. In higher order rivers (e.g., 5 th order), two-dimensional modeling may enhance flood vulnerability mapping. 26
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Source: VT Standard River Management Principles & Practices (July 2015) 28
Source: VT Standard River Management Principles & Practices (July 2015) 29
Risk Level High Play Book River Mng Land Use Medium Accept Land Use Service Life Beginning Middle End Play book Rehab/Replace River Mng Land Use Rehab River Mng Land Use Low Accept Accept Land Use Replace Response play book River Mng Replace River Mng Replace River Mng 30
Understand the threats Differences and relationship between vulnerability, criticality & risk Models useful at sorting through vast amount of data Ground truthing with local knowledge is essential Improving transportation system resilience requires a multidisciplinary approach 31
AASHTO Extreme Weather Events DOT Lessons Learned National Cooperative Research Program (NCHRP) 20-117 32
Project Overview How have DOTs responded to recent extreme weather events? What are the lessons learned from these events? What policies should DOTs put in place to better prepare for future weather events? Knowledge sharing among DOTs can create new frameworks for policies that can mitigate the impacts of 7 extreme weather events 33
Deploying Transportation Resilience Practices in State DOTs 34
Strategic Plan Asset Mgmt Risk Mgmt Performance Mgmt 35