(1) In order to provide funds for the location, design, right-of-way, and construction of selected interstate highway improvements, there shall be issued and sold upon the request of the Washington state transportation commission, a total of one hundred million dollars of general obligation bonds of the state of Washington to pay the state's share of costs for completion of state route 90 (state route 5 to state route 405) and other related state highway projects eligible for regular federal interstate funding and until December 31, 1989, to temporarily pay the regular federal share of construction of completion projects on state route 90 (state route 5 to state route 405) and other related state highway projects eligible for regular interstate funding in advance of federal-aid apportionments under the provisions of 23 U.S.C. Secs. 115 or 122: PROVIDED, That the total amount of bonds issued to temporarily pay the regular federal share of construction of federal-aid interstate highways in advance of federal-aid apportionments as authorized by this section and RCW
47.10.801 shall not exceed one hundred twenty million dollars: PROVIDED FURTHER, That the transportation commission shall adopt plans for the obligation of federal-aid apportionments received in federal fiscal year 1985 and subsequent years to pay the regular federal share of federal-aid interstate highway construction projects or to convert such apportionments under the provisions of 23 U.S.C. Secs. 115 or 122.
(2) The transportation commission may at any time find and determine that any amount of the bonds authorized in subsection (1) of this section, and not then sold, are no longer required to be issued and sold for the purposes described in subsection (1) of this section.
(3) Any bonds authorized by subsection (1) of this section that the transportation commission determines are no longer required for the purpose of paying the cost of the designated interstate highway improvements described therein shall be issued and sold, upon the request of the Washington state transportation commission, to provide funds for the location, design, right-of-way, and construction of major transportation improvements throughout the state.