(1) The office of financial management shall propose a comprehensive ten-year investment program for the preservation and improvement programs defined in this section, consistent with the policy goals described under RCW
47.04.280. The proposed ten-year investment program must be forwarded as a recommendation by the office of financial management to the legislature, and must be based upon the needs identified in the statewide transportation plan established under RCW
47.01.071(4).
(2) The preservation program consists of those investments necessary to preserve the existing state highway system and to restore existing safety features, giving consideration to lowest life-cycle costing.
(3) The improvement program consists of investments needed to address identified deficiencies on the state highway system to meet the goals established in RCW
47.04.280.