Balance the Highway Trust Fund Act

The Balance the Highway Trust Fund Act (S 5505) limits annual federal highway program spending to the most recent Treasury estimate of highway tax receipts, directly affecting states receiving federal highway funds. It requires the Transportation Secretary to distribute funds using specific formulas, prioritizing states with unused balances and redistributing unobligated funds after August 1 each year. The bill also creates a separate spending limit for mass transit programs within the Highway Trust Fund, tied to estimated mass transit tax receipts. These changes take effect October 1, 2025, ensuring highway and safety construction funding aligns with projected revenue.