 Originally known as Cann Valley Road , the Victorian section was designated as a highway in 1960 , and received the name Cann Valley Highway . The Monaro Highway name was applied to the road within Victoria in 1996 . Within NSW , the highway was created in 1938 and designated as State Highway 19 within the Department of Main Roads . In 1958 , It was named the Monaro Highway in both NSW and the ACT , though the same name had been in use by the Snowy Mountains Highway until 1955 . The Monaro Highway has more recently had a grade @-@ separated dual carriageway extension constructed within Canberra , as part of the Eastern Parkway construction project . 
