; or (D) evacuation planning and preparation. (4) Resilience grants (A) Resilience improvement grants (i) In general Using funds made available under this subsection, the Secretary shall provide resilience improvement grants to eligible entities to carry out 1 or more eligible activities under clause (ii). (ii) Eligible activities (I) In general An eligible entity may use a resilience improvement grant under this subparagraph for 1 or more construction activities to enable an existing surface transportation infrastructure asset to withstand 1 or more elements of a weather event or natural disaster, or to increase the resilience of surface transportation infrastructure from the impacts of changing conditions, such as sea level rise, flooding, extreme weather events, and other natural disasters. (II) Inclusions An activity eligible to be carried out under this subparagraph includes— (aa) resurfacing, restoration, rehabilitation, reconstruction, replacement, improvement, or realignment of an existing surface transportation facility eligible for assistance under this title; (bb) the incorporation of natural infrastructure; (cc) the upgrade of an existing surface transportation facility to meet or exceed Federal Highway Administration approved design standards; (dd) the installation of mitigation measures that prevent the intrusion of floodwaters into surface transportation systems; (ee) strengthening systems that remove rainwater from surface transportation facilities; (ff) a resilience project that addresses identified vul­ner­a­bil­i­ties described in the resilience improvement plan of the eligible entity, if applicable; (gg) relocating roadways in a base floodplain to higher ground above projected flood elevation levels, or away from slide prone areas; (hh) stabilizing slide areas or slopes; (ii) installing riprap; (jj) lengthening or raising bridges to increase waterway openings, including to respond to extreme weather; (kk) deepening channels to prevent flooding