The "Accelerating Demonstration Approaches for Protecting Transportation Assets Act" directs the Secretary of Transportation to establish a competitive grant program. This program, known as the ADAPT Assets Program, will provide up to 10 grants to eligible applicants for demonstration projects aimed at making critical transportation infrastructure resilient to natural hazards . Eligible applicants include metropolitan planning organizations, States, local governments, public transportation agencies, ports, and Tribal governments. Projects will be selected based on criteria such as addressing existing or predicted recurring damage, providing transportation system benefits like enhanced mobility and safety, and improving resilience for adjacent communities and other critical infrastructure. Grant funds can be used for predevelopment activities and capital construction to harden or adapt transportation assets, including protective features, system resilience improvements, and levees. The program also supports multiyear agreements for large-scale projects, particularly those over $500 million, that address complex delivery challenges and can serve as replicable models for other regions. The Federal share for projects may not exceed 80 percent. The Secretary must publish annual funding opportunities, coordinate with other Federal agencies, and maintain a public dashboard detailing project information. An interagency working group will report on program outcomes, best practices, and recommendations for scaling the program. The bill authorizes $2 billion annually for fiscal years 2027 through 2031 to carry out this section.