Extreme Weather Vulnerability and Resiliency ... · Ryan Gordon Planner, Southwestern PA...

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Extreme Weather Vulnerability and Resiliency of Transportation Infrastructure of Transportation Infrastructure  SPC A iii SPC Activities PA APA Conference October 23, 2017 Ryan Gordon Planner, Southwestern PA Commission

Transcript of Extreme Weather Vulnerability and Resiliency ... · Ryan Gordon Planner, Southwestern PA...

Page 1: Extreme Weather Vulnerability and Resiliency ... · Ryan Gordon Planner, Southwestern PA Commission. Why Study Extreme Weather ...

Extreme Weather Vulnerability and Resiliencyof Transportation Infrastructureof Transportation Infrastructure  

SPC A i i iSPC Activities

PA APA ConferenceOctober 23, 2017Ryan Gordon

Planner, Southwestern PA Commission

Page 2: Extreme Weather Vulnerability and Resiliency ... · Ryan Gordon Planner, Southwestern PA Commission. Why Study Extreme Weather ...

Why Study Extreme Weather Impacts and Resiliency?Impacts and Resiliency?

ll ki CBullskin Twp. Fayette County

Page 3: Extreme Weather Vulnerability and Resiliency ... · Ryan Gordon Planner, Southwestern PA Commission. Why Study Extreme Weather ...

Resiliency Emphasis at State Level

• PennDOT Statewide Extreme Weather Study

– SPC Participation on steering committee• Contributed to on the scope development and contents

• Includes a toolbox of methods and strategies for improving resilienceresilience

Page 4: Extreme Weather Vulnerability and Resiliency ... · Ryan Gordon Planner, Southwestern PA Commission. Why Study Extreme Weather ...

Extreme Precipitation is becoming more Frequentq

Significant increases in extreme precipitation in PA and the Northeast

Source: NOAA www.climate.gov

Page 5: Extreme Weather Vulnerability and Resiliency ... · Ryan Gordon Planner, Southwestern PA Commission. Why Study Extreme Weather ...

Extreme Weather is Becoming More CostlyMore Costly

NOAA National Centers for Environmental Information (NCEI)(2016). https://www.ncdc.noaa.gov/billions/

Page 6: Extreme Weather Vulnerability and Resiliency ... · Ryan Gordon Planner, Southwestern PA Commission. Why Study Extreme Weather ...

Extreme Precipitation… It happens!pp

June 23, 2016 White Sulphur Springs, WV observed 8.29 inches in 24 hours !

Page 7: Extreme Weather Vulnerability and Resiliency ... · Ryan Gordon Planner, Southwestern PA Commission. Why Study Extreme Weather ...

Pilot Study Analysis Tools 

• FEMA Hazus‐MH 2.2 Flood Model

• ArcMap Spatial Analyst

FHWA CMIP (C l d M d l I t• FHWA CMIP (Coupled Model Inter‐comparison Project) Climate Data Processing Tool g

• FHWA’s VAST (Vulnerability Assessment Scoring Tool)

Page 8: Extreme Weather Vulnerability and Resiliency ... · Ryan Gordon Planner, Southwestern PA Commission. Why Study Extreme Weather ...

Assessing Extreme Weather Vulnerability 

Page 9: Extreme Weather Vulnerability and Resiliency ... · Ryan Gordon Planner, Southwestern PA Commission. Why Study Extreme Weather ...

Redstone Creek WatershedTransportation Infrastructure Exposure

• 105 Bridges over water >20ft length 

Exposure Analysis Results

g• 14 miles of State 

Roads• 4.5 miles of active4.5 miles of active 

rail lines• 5 bus stops• 7 5 miles of Bus7.5 miles of Bus 

Route• Park n Ride lots• Numerous Freight• Numerous Freight 

Facilities

Page 10: Extreme Weather Vulnerability and Resiliency ... · Ryan Gordon Planner, Southwestern PA Commission. Why Study Extreme Weather ...

Transit Routes and

Exposure to various assets

Transit Routes and Stops

Local Bridge

Freight Facility

State Roadway

State Bridge

Railroad

Page 11: Extreme Weather Vulnerability and Resiliency ... · Ryan Gordon Planner, Southwestern PA Commission. Why Study Extreme Weather ...

Assessing Extreme Weather Vulnerability 

Page 12: Extreme Weather Vulnerability and Resiliency ... · Ryan Gordon Planner, Southwestern PA Commission. Why Study Extreme Weather ...

Indicators of Bridge Sensitivity to Heavy ‐ Extreme Precipitation 

• Location relative to flood boundary

• Bridge Age• Experienced flooding 

i tin past• Scour Rating• Substructure RatingSubstructure Rating• Drainage area 

topography and impervious surface %

• Approach Elevation• Vertical Clearance• Vertical Clearance • Flood Depth

Page 13: Extreme Weather Vulnerability and Resiliency ... · Ryan Gordon Planner, Southwestern PA Commission. Why Study Extreme Weather ...

2016 floodingHAZUS extreme event depth grid

Page 14: Extreme Weather Vulnerability and Resiliency ... · Ryan Gordon Planner, Southwestern PA Commission. Why Study Extreme Weather ...

What about the impact of Climate Change on Extreme PrecipitationChange on Extreme Precipitation 

Events?

Page 15: Extreme Weather Vulnerability and Resiliency ... · Ryan Gordon Planner, Southwestern PA Commission. Why Study Extreme Weather ...

FHWA VAST ToolIndicator Data ‐ BridgesIndicator Data  Bridges 

• Exposure Indicatorso Total Change in Annual 

P i it ti

CMIP5

Precipitationo Total Change in Seasonal 

Precipitationo Location in 500 Flood Boundary

Data

o oca o 500 ood ou da y

• Sensitivity Indicatorso Scour Ratingo Flooding Inspectiono Flooding Inspectiono Bridge Ageo Flood Depth to Vert Clearance 

Ratio

• Adaptive Capacity Indicatorso AADTo AADTo Detour Length

Page 16: Extreme Weather Vulnerability and Resiliency ... · Ryan Gordon Planner, Southwestern PA Commission. Why Study Extreme Weather ...

VAST Vulnerability Score (Bridges)Extreme Precipitation ScenarioMid Century Projection 

• Exposure Indicatorso Total Change in Annual 

Precipitationo Total Change in Seasonal 

Precipitationo Location in 500 Floodo Location in 500 Flood 

Boundary

• Sensitivity Indicatorso Scour Rating

Fl di I tio Flooding Inspectiono Bridge Ageo Flood Depth to Vert

Clearance Ratio

Ad ti C it• Adaptive Capacity Indicators

o AADTo Detour Length

Page 17: Extreme Weather Vulnerability and Resiliency ... · Ryan Gordon Planner, Southwestern PA Commission. Why Study Extreme Weather ...

VAST Vulnerability Score (Roadways)Extreme Precipitation Scenario

• Exposure Indicators

Mid Century Projection 

o Total Change in Annual Precipitation

o Total Change in Seasonal Precipitation

o Location in 500 Floodo Location in 500 Flood Boundary

• Sensitivity Indicatorso Length of Roadway 

impacted by extremeimpacted by extreme event flood water

o Max depth of extreme event flood water

o Roadway conditiony

• Adaptive Capacity Indicators

o AADTD t L tho Detour Length

o Business Plan Network

Page 18: Extreme Weather Vulnerability and Resiliency ... · Ryan Gordon Planner, Southwestern PA Commission. Why Study Extreme Weather ...

Pilot Study Findings• HAZUS can be utilized to model extreme precipitation 

events without requiring an expert hydrology modeler; 

• CMIP and the FHWA data processing tool can be used to generate localized future precipitation projections;

• FHWA VAST tool can be used to evaluate the vulnerability of bridge and roadway assets collaboration with PennDOTof bridge and roadway assets… collaboration with PennDOTDistrict staff is required to refine vulnerability ratings and assist in identifying the best available sensitivity and adaptive capacity indicators;adaptive capacity indicators; 

• Inadequate data exists on flooding history at bridge assets and for conducting vulnerability analysis on railroads and local roadway network. 

Page 19: Extreme Weather Vulnerability and Resiliency ... · Ryan Gordon Planner, Southwestern PA Commission. Why Study Extreme Weather ...

Uses of Current Studies to Future Resiliency Work

Page 20: Extreme Weather Vulnerability and Resiliency ... · Ryan Gordon Planner, Southwestern PA Commission. Why Study Extreme Weather ...

Ryan GordonTransportation Planner, [email protected]