A6 (Sydney)


The A6 is an arterial road linking Cumberland Highway at and Princes Highway at, via and. It was formerly designated as Metroad 6, which was one of the Sydney Metroads.
The A6 provides a link from the northern suburbs to the southern suburbs, and from the Pacific Highway to the Princes Highway. Some stretches such as Silverwater Road, Alfords Point Road, New Illawarra Road and Heathcote Road have very few junctions or are in rural areas, and the speed limit is therefore relaxed slightly.
The A6 includes two major bridges - the Silverwater Bridge over the Parramatta River, and the Alfords Point Bridge over Georges River.

Roads

Route "A6" consists of all or part of the following roads:
The earliest route designation of what is now the A6 was as State Route 45. It was introduced in 1974, with the route going from Victoria Road in to Princes Highway in. State Route 45 underwent several realignments. The Lidcombe bypass opened in 1982 and State Route 45 was rerouted onto the bypass. In 1996, the Silverwater Road extension opened and State Route 45 was extended to Pennant Hills Road. In 1999 Stacey Street was extended north to directly connect with Rookwood Rd, obviating the need for State Route 45 traffic to use the Hume Highway between these two roads.
State Route 45 was replaced by Metroad 6 in January 1999. The northern terminus of Metroad 6 was the Marsden Rd/Pennant Hills Road intersection in Carlingford. When the then Metroad 7 was reassigned from Cumberland Highway to the Westlink M7 motorway when it was opened in December 2005, Metroad 6 was extended northwards to the M2 Hills Motorway.
Metroad 6 was realigned between Menai and Barden Ridge, from Old Illawarra Road onto New Illawarra Road, which was completed between 2005 and 2011 as part of the Bangor Bypass project.
In 2013, as part of the introduction of the New South Wales alphanumeric route numbering scheme, Metroad 6 was dedesignated. The Pennant Hills Road section of Metroad 6 was redesignated as part of route A28 in May–June 2013, while the rest of the Metroad 6 designation was replaced by the A6 designation in August–October 2013.

Future

In 2019, the New South Wales Government announced it would rename the northern extension of the Princes Motorway, between Arncliffe and Kogarah to the "M6 Motorway". No announcement has yet been made on whether the A6 will be renumbered to avoid duplicate numbers.