OLYMPIA, Wash. -

Washington Governor Jay Inslee is set to sign a new state budget with just hours to spare.

Inslee was scheduled to formally adopt the spending plan Sunday afternoon after giving staff time to give a final review of the bill. Much of state government would have to shut down Monday if a new spending plan wasn't formally adopted by the end of the weekend.

It's been more than 20 years since a governor signed a budget this late in the process.

Lawmakers this year were initially supposed to complete the spending plan in April but were delayed by a series of disputes over tax, spending and policy proposals.

The final budget comes with a price tag of roughly $33.5 billion, with substantial new investments in public schools and higher education.