Washington government operates on a fiscal biennium that begins July 1 of each odd-numbered year. Supplemental budgets are typically enacted in each of the following two years after the adoption of a biennial budget. Appropriations are made in the biennial and supplemental transportation budgets for the operation and capital expenses of the state transportation agencies and programs.
The 2021-23 State Transportation Appropriations Act (Transportation Budget) appropriated a total of $11.8 billion from a number of transportation accounts.
The substitute bill decreases appropriations for the 2021-23 fiscal biennium by $113 million. Fund transfers and other changes to the 2021-23 Transportation Budget are also made.