Climate Change & Extreme Weather Events - Connecticut House ...

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Climate Change & Extreme Weather Events - Connecticut House ...

CLIMATE CHANGE & EXTREME WEATHER EVENTSCONNECTICUT DEPARTMENT OF TRANSPORTATIONShoreline Preservation Task Force July 24, 2013 1


HOW EXTREME WEATHER EVENTS AFFECT DOTImpacts differby type of storm& environmentalsetting:Coastal stormsInland Storms2


INLAND STORMS• Inland problems more extensive due tolarger geography• Inland events can be more damaging totransportation infrastructureo Increasing frequencyo Increasing intensity of storms− Larger rainfall amounts− Higher flood levels in streams & riversTypes of Problems:o Bridge damageo Culverts washed outo Roadways washed outo Wind damage4


Frequency & Budget Impacts of Extreme EventsNumber of Emergency Declaration Projects Initiated by Yearo Increasing frequency trendo Increasing Fiscal Impact on Department BudgetINTENSE RAIN,$5,849,3082010HURRICANESANDY,$6,828,1022012WINTERSTORMALFRED,$40,339,3012011TROPICALSTORM IRENE,$10,548,38920115


HOW DOT IS ADAPTINGVariety of Strategies & Responses required:• Preparation for approaching storms• Storm response• Longer term strategies & adaptations6


1. PREPARATION FOR APPROACHING STORMS• NIMS Incident Command Training• Coordination of all state agencies, Hartford EOC• Top off fuel depots and replenish supplies• Ready all storm response equipment• Regional Coordination through TRANSCOM,CONEG, MTAC and AASHTO• Travel advisories /Travel Bans7


2. STORM RESPONSE• All hands on deck• Keep roads safe and passible• Post storm damage assessment• Emergency Declaration for transport ofemergency relief supplies• Emergency Response contractors for rapidrepair of infrastructure• Developed Make Safe response model forutility restoration• Resources for EVAC• Federal EmergencyFunding8


Lessons Learned• Inland infrastructure more vulnerable• Generator power and fuel supplies are critical• Travel Advisories/TT bans• EMAC• Accurate damage assessments• More costly to harden than repairTropical Storm Irene2011Debris Pile-BulkeleyBridge9


3. LONGER TERM STRATEGIES & ADAPTATIONS• Prepare needs list for infrastructure hardening• Transportation asset management• Perform Risk analysis for critical infrastructure• Life cycle/benefit cost analysis10


Study Asset VulnerabilityClimate Change andPlanning for the Future• FHWA Extreme Weather VulnerabilityAssessment-Northwest Connecticut, CulvertEvaluations• NY-CT-NJ Coastal Asset Vulnerability AssessmentAddress Climate Change on Regional Scale• Transportation and Climate Change Initiativepartnerwith New England Mid-Atlantic States,through Georgetown University• Conference of New England Governors andEastern Canadian Providences-partner in GHGreduction planning and transportation sectorenergy reduction11


Example Project # 1-New Haven Rail Yard• Until the 1950’s the Yard was directly on the coastline• Construction of I-95 created an embankment along theNew Haven Harborfront-revisions to Flood Elevations(First Flood Map revision since 1950s)• Map Amendments 1998, 2008, 2010, 2013• As Flood Heights increased, building floor elevationswere increased and pump systems installed• Drainage Systems reconstructed• Progressive Adaptive DesignElements to pre-existing fixed asset13


Example Project #2-(Old Saybrook Sea Wall)• Storm Surge Erosion causedundermining and failure• Reconstruction includedhardening the asset byconstructing an unseen, deepbarrier under the toe of the wallto protect it from underminingOld Saybrook Seawall –more damageas a result of Hurricane Sandy in late2012Old SaybrookSeawall –Aftertropical stormIrene repairwork in 11/1214


Thank youPresentersThomas Harley, P.E., Chief EngineerThomas.Harley@ct.govCharles Drda, P.E., Maintenance DirectorCharles.Drda@ct.govDavid Elder, AICP, Supervising PlannerDavid.Elder@ct.gov15

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