The route connects I-15 to US-89 and SR-106 as it passes through the center of Farmington on Park Lane.

The route officially begins at the west side of the bridge over the Union Pacific Railroad and FrontRunner, proceeding northeast on Park Lane.

This interchange does not have direct access from northbound I-15 or to southbound I-15; instead, there is an exit (13) from northbound Legacy Parkway to SR-225, as well as an on-ramp from SR-225 to southbound Legacy Parkway.

In 1967, the western terminus was moved to I-15 when the freeway was constructed through the area.

However, in 2011, the western terminus was truncated back to the bridge over the railroad tracks; the part west of there was given to the city of Farmington.