Northern Expressway
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Northern Expressway Fatchen Northern Expressway South Australia |
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| The Northern Expressway looking north, halfway along the expressway | |
| Coordinates | 34°35′S 138°44′E / 34.59°S 138.73°ECoordinates: 34°35′S 138°44′E / 34.59°S 138.73°E |
| Type | Freeway |
| Length | 23 km (14 mi) |
| Opened | 13 September 2010 |
| Route number(s) |
 National Highway M20 |
| NE end |
 Gawler Bypass Road, Gawler, Adelaide
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| SW end |
 Port Wakefield Road, Waterloo Corner
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| Major suburbs / towns | Angle Vale, Andrews Farm, Macdonald Park, Penfield |
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Highways in Australia National Highway • Freeways in Australia Highways in South Australia |
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The Northern Expressway (route M20), also known as the Fatchen Northern Expressway, is a 23 kilometre long controlled-access highway in Adelaide, South Australia. It travels from Gawler (on National Highway A20, the Sturt Highway) to Port Wakefield Road (on National Highway A1). The road has been built to four-lane standard and provides a faster route between Adelaide and Gawler, whilst reducing the amount of traffic on Main North Road, which passes through the heart of the northern suburbs and is interspersed with frequent traffic lights. It also allows freight avoid residential areas and go straight to Port Wakefield Road and onto the Port River Expressway (A9) to reach the harbour at Port Adelaide.
Cycling is not permitted on the Expressway. The Stuart O'Grady Bikeway is a sealed shared cycling and walking path adjacent to the eastern side of the expressway. The northern end connects to the on-ramp from Two Wells Road to the Gawler Bypass Road, and the southern end is adjacent to Port Wakefield Road at Mill Road.
The largest road project undertaken in South Australia in at least sixty years, the expressway was delivered at a cost of approximately $564 million jointly funded by the South Australian and Commonwealth Governments. The Design and Construct contract was awarded to the Fulton Hogan York Joint Venture, a partnership between trans-Tasman contractor Fulton Hogan and South Australian based York Civil. The design joint venture, managed by Fulton Hogan York Joint Venture consisted of Maunsell, SMEC and Dare Sutton Clark. The work included an 8 km upgrade of the existing Port Wakefield Road. Part of the cost was covered by the AusLink national transport funding.
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