[1] The highway, which opened in 2012, serves as a bypass of Del Rio, and provides access to Laughlin Air Force Base near its southern terminus.

[3] The roadway travels to the north past the western edge of Laughlin Air Force Base; an interchange with Spur 317, whose designation was extended to connect to the then-proposed Loop 79 in 2008, provides access to the military facility.

[4] Loop 79 then briefly enters Del Rio city limits, where it has an interchange with US 90, before curving to the northwest and intersecting RM 2523, known locally as Hamilton Lane.

[5] The route then travels through sparsely populated Val Verde County before turning to the west, crossing US 277 / US 377 at an interchange before reaching its northern terminus at an intersection with US 90.

[2] Loop 79 is classified as a super-2 highway, with interchanges at US 277 / US 377 in the north, US 90 in the east, and at the access road to Laughlin Air Force Base.