County highway
Legacy Parkway is part of the larger Legacy Highway project first proposed by then-governor Mike Leavitt, which ultimately will run north from Nephi toward Brigham City. The concept of a western Davis County highway has existed since the 1960s, with some proposals routing the highway over Antelope Island or across Farmington Bay. Legacy Parkway was to extend to the west side of the Salt Lake City International Airport and connect to I-80 at 5600 West; however, that plan was abandoned in October 1997. A survey taken by Valley Research for "The Salt Lake Tribune" in December 1997 showed 64 percent of Davis County residents were in support of building the parkway, with just 19 percent opposing the construction. State officials had hoped to have the parkway open in time for the 2002 Winter Olympics being held in Salt Lake City; however, construction was delayed too many times for that to occur.