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|Length:||52 km (32 mi)|
|Existed:||April 1993 – present|
Metroad 3 is a major metropolitan arterial route, called a 'Metroad' in Sydney, New South Wales Australia. It runs from its intersection with Metroad 10 at Mona Vale, to its intersection Metroad 1, the Princes Highway, at Blakehurst. The route of Metroad 3 runs along a whole series of roads which also have other names. From north to south they are Mona Vale Road, Ryde Road, Lane Cove Road, Devlin Street, Church Street, Concord Road, Homebush Bay Drive, Centenary Drive, Roberts Road, Wiley Avenue and King Georges Road.
What is now called Metroad 3 was initially designated to become a major north-south metropolitan arterial route in 1964, when the route incorporating several existing local arterial roads was designated as 'Ring Road 3'. It was subsequently re-designated 'State Route 33' between 1974 and 1993, and again re-designated 'Metroad 3' after April 1993.
It is the only one of Sydney's 'Metroad' routes that has not changed alignment since the Metroad system was adopted in 1993, although there were changes to the route prior to that.
After 1964, upgrading projects were commenced, with new bridges over the Lane Cove River between Pymble and Ryde (1967), and duplication of the bridge over the Parramatta River between Ryde and Concord (1982). Many projects have been undertaken over the ensuing decades to widen most of the route in stages to three lanes each way, although no proper freeway sections have ever been constructed.
Grade-separated crossings have been constructed where Metroad 3 crosses other major roads: at the Pacific Highway (Metroad 1) at Pymble (grade separation completed in 1989), M2 Hills Motorway (Metroad 2) at Macquarie Park (1993), Epping Road at North Ryde (1978), at Victoria Road at Top Ryde(1998), at the intersection with Australia Avenue and Underwood Road, at Homebush (1998), at the M4 Western Motorway (Metroad 4) and Parramatta Road, at Flemington (1992), the Hume Highway at Chullora (1998), and the M5 South Western Motorway (Metroad 5) at Beverly Hills (1991).
A major deviation of part of the route was built, relocating the arterial route to the west between Rhodes and Wiley Park, to bypass the Strathfield bottleneck and improve access to the Olympic Precinct at Homebush Bay. The deviated route includes Homebush Bay Drive, Centenary Drive, and an upgraded Roberts Road though Chullora and Greenacre, connecting to King Georges Road near Wiley Park. The road upgrades, new bridges and connections for this deviation were completed in stages between 1983 and 1998. This replaced the original route along Concord Road, Coronation Parade, and Punchbowl Road, which passed through a very congested section at Strathfield and was also problematical to widen.
Metroad 3 is a major connector between most of the major radial routes emanating from central Sydney, and a major link between the northern and southern parts of the Sydney tolled orbital freeway. It is the most direct, although not necessarily the quickest, route across Sydney between the South Coast and the North Coast.
Most of the route has been progressively ugraded to three lanes in each direction ( although the kerbside lanes are often blocked by parking ). Sections which are only two lanes in each direction remain, between Beverley Hills and South Hurstville, along Homebush Bay Drive, and between St Ives and Terry Hills. Between Mona Vale and Terry Hills, most of the eastern section of Mona Vale Road is only 1 lane in each direction. Much of the route becomes very congested in peak hour.
It is believed that this route will be known as the A3 when alphanumerical road numbering is introduced in New South Wales in the near future.
Metroad Suburbs 
- Mona Vale
- St. Ives
- West Pymble
- Macquarie Park
- North Ryde
- Liberty Grove
- Sydney Olympic Park (formerly Homebush Bay)
- Homebush West (Flemington)
- Wiley Park
- Beverly Hills