State Highway 59 begins in Maddic at Highway 71. The road is a two-lane highway as it runs north along Kyle Hester Avenue before exiting Maddic and continuing north toward the town of Lalog (pop. 1,661). The road continues north, crossing Highway 66 at the "Gregory F. Brahnef Intersection" before leaving Thomas County. At the town of Hatfield, the highway has a four-way intersection with a divided highway, National Highway 72, at the first signaled intersection since Maddic. The highway remains two lanes wide as it continues north toward the small town of Martinston (pop. 662 at the 2012 census) and the city of Shaper (pop. 12,264 in 2012). In Shaper, the road widens to five lanes (including a center lane). After leaving Shaper, the road becomes a four-lane dual carriageway for the remaind