SR-319 begins at US-40/US-189 at the Mayflower interchange (exit 8 on that highway) and proceeds to the east as a two-lane roadway with a center turn lane.

The route passes a large hotel complex before veering to the southeast, towards the Jordanelle Reservoir.

[3] In conjunction with the construction of the Jordanelle Reservoir in the late 1980s, a new state park was proposed on its western shore, with an access road connecting it to the new alignment of US-40/189.

On November 3, 1989, the Utah Transportation Commission approved the designation, which initially extended from US-40/189 east to the proposed boat ramp, a distance of 0.99 miles (1.59 km); however, the eastern 0.55 miles (0.89 km) had not been constructed at the time.

The route was slightly modified in 2001, when the legislature moved the east end to the state park fee station.