Wyo. Stat. Ann. § 16-5-107

In no event shall the aggregate amount of indebtedness of any issuer exceed the maximum allowable amount as determined pursuant to the constitutional and statutory provisions, if any, applicable to the issuer. In determining and computing the aggregate amount of indebtedness of any issuer, public securities which have been refunded, as provided in this act, by immediate payment or prior redemption and retirement or by the placement of the proceeds of refunding public securities or investments thereof in escrow, shall not be deemed outstanding indebtedness from and after the date on which sufficient monies are placed with the paying agent of the outstanding public securities for the purpose of immediately paying, or redeeming and retiring the bonds, or from and after the date on which the proceeds of the refunding public securities or investments thereof are placed in escrow.