 The Monaro Highway name was actually applied to State Highway 4 at that time , which ran from Tathra to Wagga Wagga . It was decided to expand the main roads network over the following years , and in 1938 the Trunk Road sections of the future highway were reclassified as State Highway 19 by the Department of Main Roads ( DMR ) ( which had succeeded the MRB in 1932 ) . State Highway 19 at this time connected to the <unk> Highway at the Victoria Border . In 1955 it was decided to rename State Highway 4 , and it was renamed as the Snowy Mountains Highway . As part of these changes the section of the State Highway 4 between Nimmitabel and Cooma was also redesignated to be part of State Highway 19 . Three years later in 1958 , the various roads classified as State Highway 19 , were then named the Monaro Highway . In contrast with the Snowy Mountains Highway , the entire length of State Highway 19 was within the Monaro region . During the mid to late 1960s the highway south of Nimmitabel was rerouted along a newly constructed roadway . The former alignment is now known as Old Bombala Road . The Snowy Mountains Highway was also realigned in this area as part of these works and connected to the Monaro Highway along the new alignment . In November 1976 , the alignment was changed so as not to pass through Delegate any longer . The highway now connected to what was then the Cann Valley Highway in Victoria . The former alignment was classified as Main Road 93 and is now known as Delegate Road for most of its length . The State Highway terminology is no longer used , and as such the Monaro Highway is currently classified as Highway 19 ( or <unk> ) by Roads and Maritime Services . 
