...Brazoria County's 'AAA' IDR reflects its 'aaa' financial resilience assessment, supported by 'Ample' budgetary flexibility. The county benefits from 'Strongest' assessments for population growth and the long-term liability composite relative to Fitch Ratings' local government rating portfolio. Demographic and economic level metrics are assessed at 'Midrange.' The 'AAA' rating on BCTRA's toll revenue bonds reflects the county's general creditworthiness, as reflected in its IDR, and its commitment to support BCTRA operating and debt service costs throughout the term of the subordinate-lien bonds....
