Through Sherman, SH 56 operates on a pair of one-way streets, Lamar (eastbound) and Houston (westbound).

SH 56 runs through a generally undeveloped area of Grayson County before entering Bells, where the highway meets US 69.

SH 56 runs through Dodd City, Windom and Honey Grove before ending at an intersection with US 82.

On August 26, 1993, SH 56 was extended east to US 82 at the Lamar County line, its current terminus.

Media related to Texas State Highway 56 at Wikimedia Commons