 On December 7, 1955, the route was extended across the island to South Baymouth.While the road was re-aligned somewhat throughout its history (many of the re-alignments took place in the late 1950s and early 1960s), and its overall path has not changed, its length has varied considerably during re-alignments, creeping as high as 130 km during the 1960s, before settling back down to its current value of around 116 km.Some former alignments (such as "Devil's Elbow Road") are still in use.