Wash. Admin. Code § 136-500-080
Any loan funded through this program shall have a term not to exceed twenty-four months. The county will be invoiced six months from the date of contract execution and quarterly thereafter until the end of the contract term. If a county desires a longer payback term, the county's legislative authority may request a revised payback term at the next regularly scheduled board meeting.
Simple interest on the amount of the loan shall be the monthly rate of return for the LGIP not to exceed three percent.
If a county pays the county road administration board the principle amount of the loan within six months of the date of contract execution, no interest will be charged and the contract will be closed. Should a county not pay the loan in full within six months of the date of contract execution, interest will be calculated from the date of contract execution to the date of final payment. A county may pay off any loan received through this program before the end of the term to reduce the amount of interest owed.
Wash. Admin. Code § 136-500-080