This Act may be cited as the Thriving Communities Act of 2025.

(a) Establishment The Secretary of Transportation, in coordination with the Secretary of Housing and Urban Development, shall establish a thriving communities grant program to provide technical assistance and capacity building to help the fastest growing communities advance transformative infrastructure projects. (b) Report The Secretary shall submit to the Committee on Appropriations of the House of Representatives a report on— (1) the methods the Secretary uses in carrying out the program established under subsection (a) to promote transit-oriented development; (2) the level of coordination between the Secretary of Transportation and the Secretary of Housing and Urban Development in carrying out such program, including the respective roles of each Secretary; and (3) what metrics are used to distribute funding under such program. (c) Authorizations of appropriations There is authorized to be appropriated for each fiscal year— (1) $100,000,000 to the Secretary of Transportation to carry out this section; and (2) $5,500,000 to the Secretary of Housing and Urban Development to facilitate coordination with the Secretary of Transportation to carry out this section.