Two bridges cross the Gamtoos close to its mouth. The original 180-metre (600 ft) bridge on the R102 which was opened in 1895 in order to replace the ferry that had been in use up to that time. A modern concrete bridge was built during the construction of the N2 in the early 1970s.
Interesting facts – during floods of October 1867, the level of water in some parts of the Gamtoos River rose by up to 21m (70 ft). And in 1877, during a severe drought in the region, the Gamtoos River dried up completely.