The main purpose of this legislation, known as the Piers Reinvestment Act, is to enhance the resilience of municipal piers in the United States. It aims to provide financial support through grants for the strengthening, upgrading, or improvement of these piers. This is part of a broader initiative to promote efficient and cost-saving transportation operations while ensuring that critical infrastructure can withstand environmental challenges. Key provisions of the Act include the establishment of resilience improvement grants specifically for municipal piers.