Thankerton Bridge, also known as Boat Bridge because it replaced a ferry, is an arch bridge to link a shortcut to Biggar from Thankerton. The bridge has a steep approach from the east, with a blind summit, and is single track, forcing caution on drivers. There are two arches across the river, and with the west bank being considerably higher than the east, the west arch is the larger of the two. The bridge parapets rise with the road, and splay out at either end on the approaches. Those to the east are considerably longer, with the western approach entering the village.