HDOT Climate Resilience Action Plan | May 2021

from numerous coastal storms, including Hurricanes Sandy, Katrina, Ivan, Floyd, and Ike, 3) damage to roadways on coastal bluffs due to waves and wave runup in the El Niño-related coastal storms of the Pacific in 1992 and in the Great Lakes throughout the past several decades, and 4) damage resulting from flooding of highways and tunnels in Hurricane Sandy. » Transportation System Preparedness and Resilience to Climate Change and Extreme Weather Events. Established FHWA policy on preparedness and resilience to climate change and extreme weather events. The Order states that it is FHWA's policy to strive to identify the risks of climate change and extreme weather events to current and planned transportation systems. The FHWA will work to integrate consideration of these risks into its planning, operations, policies, and programs in order to promote preparedness and resilience; safeguard Federal investments; and ensure the safety, reliability, and sustainability of the nation’s transportation systems. FHWA managers and staff shall ensure that FHWA programs, policies, and activities for which they are responsible integrate consideration of climate change and extreme weather event impacts and adaptation into its planning, operations, policies, and programs in order to promote climate change and extreme weather event preparedness and resilience. Proactive management involves developing engineering solutions, operations and maintenance strategies, asset management plans, and transportation programs that address risk and promote resilience at both the project and systems levels. B.4.3 U.S. ARMY OF CORPS OF ENGINEERS (USACE) The USACE has developed numerous technical guidance documents relating to coastal resilience and mitigation of weather-related stresses. An excellent overview is available at: https://www.usace.army.mil/corpsclimate/Climate_Preparedness_and_Resilience/Coastal-Risk-and-Reduction- and-Resilience/ (accessed September 14, 2020). Particularly relevant documents for HDOT include the following: » Implementation of Resilience Principles in the Engineering & Construction Community of Practice. Engineering and Construction Bulletin 2020-6. May 29, 2020. Accessed July 27, 2020 from: https://www.wbdg.org/FFC/ARMYCOE/COEECB/ecb_2020_6.pdf Policy and guidance for applying the USACE principles of resilience. Resilience evaluations should be completed as needed based on engineering judgment and reflective of project complexity and assessed risk. Analyses and outcomes should be formally documented. Where appropriate, interconnections between project components and systems and their individual and cumulative effect on project performance and resilience should be considered. » Incorporating Sea Level Change in Civil Works Programs, Engineer Regulation No. 1100-2-8162 . June 15, 2019. Accessed July 27, 2020 from: https://www.publications.usace.army.mil/Portals/76/Users/182/86/2486/ER_1100-2-8162.pdf?ver=2019-07- 02-124841-933 Guidance for incorporating the direct and indirect physical effects of projected future sea level change across the project life cycle in managing, planning, engineering, designing, constructing, operating, and maintaining USACE projects and systems of projects. Potential relative sea level change must be considered in every USACE coastal activity as far inland as the extent of estimated tidal influence. FHWA Order 5520. December 15, 2014. Accessed July 27, 2020 from: https://www.fhwa.dot.gov/legsregs/directives/orders/5520.cfm

HAWAI‘ I HIGHWAYS | CLIMATE ADAPTATION ACTION PLAN ( B-11 )