The rise of the motor vehicle era in the early 20th century saw the road gain prominence once more, and by 1939 the whole road had been sealed. Congestion at the Perth end of the road in the 1930s led to parallel roads Berwick Street and Shepperton Road being upgraded to provide bypasses. The entire Perth−Albany road was renamed Albany Highway on 2 October 1940, in recognition of its importance as an arterial traffic route. From the late 1970s, $49 million over ten years was spent on repairing Albany Highway, and the experience saw Main Roads develop a program of interventions to prevent costly road reconstruction. Since the 1990s Main Roads has been upgrading various portions along the length of Albany Highway, including widening sections to dual carriageways in Perth, and the construction of the Kenwick Link bypass.