addressing climate change adaptation in regional transportation plans

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Addressing Climate Change Adaptation in Regional Transportation PlansA Guide for California MPOs and RTPAsClimate Impactand PotentialInfrastructureImpactLandslidesRoad WashoutsPotentialTransportation Impacts Planning Strategy Design Strategy Operations/Maintenance ResponseRoute closuresTravel delaysIncreased safety risksBridge Scour Compromised integrity ofbridge structures Bridge failure resulting inclosure Reduced bridge capacityRailway Flooding Disruption of rail traffic –closure or delay Rail and railway roadbeddamage Malfunctions of track orsignal sensorsHigher Temperatures – Extreme Heat EventsHighway Asphalt Route closuresRutting Travel delaysHighway Asphalt Limitations onBucklingconstruction periodsConcreteduring summerDeterioration/ BlowupsLimits on Periods ofConstruction Activity Identify roadway segmentsimpacted by past intenseprecipitation events Address vulnerabilities intransportation plans Identify alternatives to vulnerableroutes Perform increased riskassessment for new roads Identify locations of bridges inlocations vulnerable to sea-levelrise and bridge scour Address vulnerabilities intransportation plans Identify segments of railwayvulnerable to sea-level rise Address vulnerability in rail plans Identify roadway segmentsimpacted by past extreme heatevents Address vulnerabilities intransportation plansProtect critical evacuation routesIncorporate landslide mitigationmeasures for projects in vulnerableareas Ensure adequate drainage onroadbed surfaces, and shoulders Incorporate rockfall protectionmeasures Protection of bridge piers andabutments with riprap Increase base elevation of rail beds Upgrade rail drainage systems Increase warning and advisory systemsfor dispatch centers and crews Development of new heat resistantasphalt/concrete mixtures Overlay with new rut-resistant asphaltRepair damage as needed by emergencycontract or permanent restoration projectIncreased monitoring of infrastructure conditionsEnsure the roadway is clear of rocks, debris,and downed vegetationDuring extreme precipitation events, continuallymonitor drainage systemsMinimize repair backlogsIncreased monitoring for bridge pier andabutment scourIncreased monitoring of infrastructure conditionsEnsure drainage systems are adequate toaccommodate flood conditions Ensure bridge openings/culverts are clear forappropriate flood managementIncreased monitoring of infrastructure duringextreme heat eventsOverlay with more rut-resistant asphaltIncreased maintenance to prevent impacts ofextreme heatShift to evening construction schedule4-6 Cambridge Systematics, Inc.
Addressing Climate Change Adaptation in Regional Transportation PlansA Guide for California MPOs and RTPAsClimate Impactand PotentialInfrastructureImpactRail Buckling Potential for trainderailmentIncreased ThermalExpansion ofBridgesChanges toVegetation/BiodiversityIncrease in Wildfiresand MudslidesPotentialTransportation Impacts Planning Strategy Design Strategy Operations/Maintenance Response Malfunction of track andsignal sensors Disruption of rail traffic –closure or delayBridge damageBridge closuresHigher temperatures willincrease droughtconditions. Landscapedright-of-ways will requiremore wateringChanging temperaturepatterns will alter naturalbiodiversityRoute closures anddetoursDamaged infrastructuresuch as guardrails andsignsIdentify segments of railwaylocated in areas mostvulnerable to extreme heateventsAddress vulnerability in railplansIdentify bridges impacted bypast extreme heat eventsAddress vulnerabilities intransportation plansWhen feasible, work with localmunicipalities to use reclaimedwater vegetation irrigationSource: Climate impacts highlighted based on relevance for California regions, Caltrans, 2012. Design for higher maximumtemperatures in replacement or newrail infrastructureEnsure bridge joints canaccommodate anticipated thermalexpansionDesign for higher maximumtemperatures in replacement or newconstructionIncreased consideration of droughttolerant vegetationConvert to new “smart” irrigationsystems that water only whennecessary to conserve waterDesign alternatives to water reliantplants, such as decorative hardscapeUse native drought resistant plansIncrease use of inert materials asgroundcover to minimize exposureand need for plantingsUse of heat resistant infrastructureIncorporate mudslide mitigationmeasures for projects in vulnerableareas (burned-out)Improved monitoring of rail temperatures, tracks,track sensors and signals during extreme heateventsIncreased track maintenanceLower speeds and shorter trains to shortenbraking distance when necessaryLighter loads to reduce track stress whennecessaryImproved monitoring of bridge jointsIncreased ongoing bridge maintenanceIncreased vegetation managementIncreased monitoring of slope stability invulnerable areasRepair damage as needed by emergencycontract or permanent restoration projectCambridge Systematics, Inc. 4-7
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Addressing Climate Change Adaptatio
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appendix b reportState-of-the-Pract
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State-of-the-Practice Climate Chang
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C A L I F O R N I AADAPTATIONPLANNI
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Adaptation Planning Guide - Advisor
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List of Tables (cont’d.)Table 6.
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Climate Impact RegionsThe APG is or
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APGSTART HERE:PLANNING FOR ADAPTIVE
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What are the designated climate imp
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CA Climate Adaptation Planning Guid
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• Selected Demographic Data. Sele
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Cal-Adapt ProjectionsTable 1. Summa
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Selected Infrastructure and Regiona
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illnesses due to air pollution resu
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Additional Resources• Sea level r
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Cal-Adapt ProjectionsTable 5. Summa
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frequency can harm forests. Large i
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Bay Area RegionCounties: Alameda, C
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the Sacramento and San Joaquin rive
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Table 12. Selected Population Data
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Sea level rise is also expected to
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Additional Resources• Public Heal
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Cal-Adapt ProjectionsTable 13. Summ
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Table 16. Selected Population Data
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As with crops, climate change impac
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Additional Resources• Wildfire Re
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elevations, increased static levee
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The ecosystem functions of the Delt
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Setting and HistoryThe California D
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The islands in the lower Bay-Delta
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Some of the questions that should b
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Southern Central Valley RegionCount
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Biophysical CharacteristicsThe west
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The crops produced are varied and i
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Communities in this region should e
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have the resources to prepare for,
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Additional Resources• Sea Level R
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Timber practices have also had ecos
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Southeast Sierra RegionCounties: Al
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Biophysical CharacteristicsThe sout
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ultimately result in reduced water
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particular concern are populations
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Additional Resources• Sea Level R
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industry around Big Bear. As there
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California Natural Resources Agency
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addressing climate change adaptation in regional transportation plans

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