Lunt Park is the name of the rest stop on I-15 at mile marker 88 between Beaver and Paragonah. There are both north and south bound stops. The north bound stop on the east side of the highway is predominantly open grass with just a handful of trees, mostly on the south end. The southbound stop on the west side of the highway has a similar amount of grass, but has at least 8 very large trees creating a migrant trap in the desert. The surrounding areas are mostly degraded grassland, some farm land, and shrubsteppe. Like most rest facilities bathrooms are present, and during the tourist season these stops can be quite busy.
There is just one checklist from here, at the moment--I know I have stopped here several times in the past and had birds. If you are headed to St. George, I think it might be worth checking the southbound side. The northbound side doesn't look as good so it may not be worth your time coming back. In the summer WESTERN KINGBIRD are often seen here. LARK SPARROW, BREWER'S SPARROW, and SAGEBRUSH SPARROW use the nearby shrubsteppe habitat, while SAGE THRASHER and HORNED LARK are also found. In the winter raptors can occasionally be seen here, some times perched in the trees. BALD EAGLE, ROUGH-LEGGED HAWK, FERRUGINOUS HAWK, and PRAIRIE FALCON are all possible.
If you are traveling out of Beaver, from exit 109 southbound it will be about 20 miles till you reach the pull out to the rest stop on your right. Alternatively if you are headed north from Paragonah at I-15 exit 82 it will be about 4.7 miles till you reach the pull off on your right to the north bound rest stop.