addressing climate change adaptation in regional transportation plans

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.