A third segment of 20.04 miles (32.25 km) runs from Highway 7 north of DeGray Lake Resort State Park northeast to U.S. Route 270B (US 270B) in Hot Springs.

A fourth segment of 8.78 miles (14.13 km) runs from Highway 5 in Fountain Lake east to US 70 north of Lonsdale.

[5] Southeast of these creek crossings, a proposed intersection with Highway 273 is marked on the county map produced by ArDOT (as of January 2018).

Outside the city limits of Sparkman, the traffic counts dropped below 1,000 with a low of 740 between Pine Grove and Holly Springs.

It runs south through a sparsely populated rural area with swamps, sloughs, and pine trees, crossing L'eau Frais Creek and becoming a section line road southbound.

The highway passes a small, discontinuous segment of the Big Timber Wildlife Management Area (WMA) south of the creek crossing.

North of the overlap, Highway 128 becomes the eastern edge of the Jack Mountain WMA, which offers deer, turkey, and bear hunting (among others) to permitted hunters through the Arkansas Game and Fish Commission (AGFC).

[13] North of this interchange, the highway passes an industrial facility and the Arkansas State Police Troop K Headquarters before terminating at a junction with US 270B (Malvern Avenue).

[4] East of the town, Highway 128 passes through rural forested area, nearing the Saline County line before turning southward.