(1) Legacy Parkway, from the junction of I-215 in Davis County northerly to the junction with US 89 and I-15:
(a) is exempt from the legislative approval requirement in Section 72-4-301.5; and
(b) may not be segmented.
(2) A highway nominated for National Scenic Byway or All-American Road designation prior to January 1, 2009 is exempt from the legislative approval requirement in Section 72-4-301.5.