D.C. Mun. Regs. tit. 10-A, § 427

T-4.4 Climate Resiliency

Effective Aug 21, 2021Authority: Comprehensive Plan Amendment Act of 2021, effective August 21, 2021 (D.C. Law 24-20; 68 DCR 006918 (July 16, 2021)). Source: District of Columbia Comprehensive Plan Act of 1984, effective April 10, 1984 (D.C. Law 5-76; 31 DCR 1049 (March 9, 1984)); as amended by District of Columbia Comprehensive Plan Act of 1984 Land Use Element Amendment Act of 1984, effective March 16, 1985 (D.C. Law 5-187; 32 DCR 873 (February 15, 1985)); as amended by District of Columbia Comprehensive Plan Amendments Act of 1989, effective May 23, 1990 (D.C. Law 8-129; 37 DCR 55 (January 5, 1990)); as amended by District of Columbia Comprehensive Plan Amendments Act of 1989 NCPC-Recommended Amendments, and Closing of Public Alleys in Square 669, S.O. 88-452, Act of 1990, effective May 23, 1990 (D.C. Law 8-132; 37 DCR 2213 (April 6, 1990)); as amended by District Government Land Use Temporary Amendment Act of 1994, effective October 1, 1994 (D.C. Law 10-190; 41 DCR 5360 (August 12, 1994)); as amended by Comprehensive Plan Amendments Act of 1994, effective October 6, 1994 (D.C. Law 10-193; 41 DCR 5536 (August 19, 1994)); as amended by District of Columbia Comprehensive Plan Act of 1984 Land Use Amendment Act of 1994, effective March 21, 1995 (D.C. Law 10-235; 42 DCR 30 (January 6, 1995)); as amended by Technical Amendments Act of 1996, effective April 18, 1996 (D.C. Law 11-110; 43 DCR 530 (February 9, 1996)); as amended by Second Technical Amendments Act of 1996, effective April 9, 1997 (D.C. Law 11-255; 44 DCR 1271 (March 7, 1997)); as amended by Comprehensive Plan Amendment Act of 1998, effective April 27, 1999 (D.C. Law 12-275; 46 DCR 1441 (February 19, 1999)); as amended by Technical Amendments Act of 1999, effective April 12, 2000 (D.C. Law 13-91; 47 DCR 520 (January 28, 2000)); as amended by Comprehensive Plan Amendment Act of 2006, effective March 8, 2007 (D.C. Law 16-300; 54 DCR 924 (February 2, 2007)); as amended by Technical Amendments Act of 2008, effective March 25, 2009 (D.C. Law 17-353; 56 DCR 1117 (February 6, 2009)); as amended by Comprehensive Plan Amendment Act of 2010, effective April 8, 2011 (D.C. Law 18-361; 58 DCR 908 (February 4, 2011)); as amended by Comprehensive Plan Amendment Act of 2021, effective August 21, 2021 (D.C. Law 24-20; 68 DCR 006918 (July 16, 2021)).District of Columbia, Office of the Secretary

427.1 Climate change will have serious impacts on transportation infrastructure as temperatures rise, precipitation rates increase, and sea levels rise. These changes will cause transportation infrastructure to flood more frequently, roads to buckle, rails to bend and warp, and an increased maintenance burden in the District for transportation facilities. These impacts require special consideration in the planning, design, and maintenance of transportation infrastructure. The District has experienced several extreme weather events in recent years, which have caused extensive disruption to the District's transportation system.

427.2 Policy T-4.4.1: DDOT Climate Change Adaptation Plan Continue to implement and update the DDOT Climate Change Adaptation Plan so that the District's transportation network will withstand future climate conditions. DDOT's Climate Change Adaptation Plan provides the foundation to better understand, anticipate, and prepare transportation assets for changing future conditions.

427.3 Policy T-4.4.2: Climate-Adaptive and Resilient Transportation Improvements Promote the integration of climate-adaptive, resilient design, and operational and maintenance protocols for transportation systems serving the District.

427.4 Policy T-4.4.3: Mitigation Measures for Flood-Prone Transportation Facilities Develop, prioritize, and implement flood mitigation measures for existing flood-prone transportation facilities based on vulnerability assessments and consideration of extreme precipitation events and sea level rise.

427.5 Action T-4.4.A: Climate Adaptation Guidelines for Transportation Projects Develop and implement climate adaptation guidelines while designing transportation projects. The guidelines may include evaluating the effectiveness of stormwater management, urban heat island mitigation, and other technical components to better buffer transportation infrastructure from the impacts of climate change.

427.6 Action T-4.4.B: Research Resilient Transportation Design Best Practices Research and leverage existing best practices from other metropolitan transportation departments as DDOT continues to make future adjustments to its design parameters that incorporate hazard mitigation and climate change adaptation. Consider updating design standards to account for projected extreme temperatures and precipitation.

427.7 Action T-4.4.C: Climate-Ready Evacuation Routes Identify alternate evacuation routes for roads and bridges identified as vulnerable to flooding and/or sea level rise.

SOURCE: District of Columbia Comprehensive Plan Act of 1984, effective April 10, 1984 (D.C. Law 5-76; 31 DCR 1049 (March 9, 1984)); as amended by District of Columbia Comprehensive Plan Act of 1984 Land Use Element Amendment Act of 1984, effective March 16, 1985 (D.C. Law 5-187; 32 DCR 873 (February 15, 1985)); as amended by District of Columbia Comprehensive Plan Amendments Act of 1989, effective May 23, 1990 (D.C. Law 8-129; 37 DCR 55 (January 5, 1990)); as amended by District of Columbia Comprehensive Plan Amendments Act of 1989 NCPC-Recommended Amendments, and Closing of Public Alleys in Square 669, S.O. 88-452, Act of 1990, effective May 23, 1990 (D.C. Law 8-132; 37 DCR 2213 (April 6, 1990)); as amended by District Government Land Use Temporary Amendment Act of 1994, effective October 1, 1994 (D.C. Law 10-190; 41 DCR 5360 (August 12, 1994)); as amended by Comprehensive Plan Amendments Act of 1994, effective October 6, 1994 (D.C. Law 10-193; 41 DCR 5536 (August 19, 1994)); as amended by District of Columbia Comprehensive Plan Act of 1984 Land Use Amendment Act of 1994, effective March 21, 1995 (D.C. Law 10-235; 42 DCR 30 (January 6, 1995)); as amended by Technical Amendments Act of 1996 effective April 18, 1996 (D.C. Law 11-110; 43 DCR 530 (February 9, 1996)); as amended by Second Technical Amendments Act of 1996 effective April 9, 1997 (D.C. Law 11-255; 44 DCR 1271 (March 7, 1997)); as amended by Comprehensive Plan Amendment Act of 1998, effective April 27, 1999 (D.C. Law 12-275; 46 DCR 1441 (February 19, 1999)); as amended by Technical Amendments Act of 1999, effective April 12, 2000 (D.C. Law 13-91; 47 DCR 520 (January 28, 2000)); as amended by Comprehensive Plan Amendment Act of 2006, effective March 8, 2007 (D.C. Law 16-300; 54 DCR 924 (February 2, 2007)); as amended by Technical Amendments Act of 2008, effective March 25, 2009 (D.C. Law 17-353; 56 DCR 1117 (February 6, 2009)); as amended by Comprehensive Plan Amendment Act of 2010, effective April 8, 2011 (D.C. Law 18-361; 58 DCR 908 (February 4, 2011)); as amended by Comprehensive Plan Amendment Act of 2021, effective August 21, 2021 (D.C. Law 24-20; 68 DCR 006918 (July 16, 2021)).