Highway 238 is an east–west state highway in the Lower Arkansas Delta. The route of 17.57 miles (28.28 km) begins at US Highway 49/US Highway 70 in Brinkley and runs east to US 79 near Moro. The route is maintained by the Arkansas State Highway and Transportation Department (AHTD).

Highway 259 is a designation for three north–south state highways in northeast Arkansas. A southern route of 12.11 miles (19.49 km) runs north from Highway 238 to US Route 70 (US 70) at Lake Grove, Arkansas. A second route of 6.90 miles (11.10 km) begins at Highway 306 and runs north to Highway 284 in Cross County. A third route of 3.14 miles (5.05 km) begins at Highway 364 and runs north to Highway 42 near Hickory Ridge.