Highways of regional significance may receive funding under the conditions of RCW 36.120.020(8)(c). The following highways are of regional significance:

(1) That portion of state route number 9 that runs from state route number 522 in the south to state route number 531 in the north;

(2) That portion of state route number 524 that runs from state route number 5 easterly to state route number 522;

(3) That portion of state route number 704 from state route number 5 to state route number 7.