Max Fatchen Expressway

Northern Expressway Fatchen Northern Expressway South Australia
The Northern Expressway looking north, halfway along the expressway
NE end SW end
Coordinates	34°35′S 138°44′E / 34.59°S 138.73°E / -34.59; 138.73Coordinates: 34°35′S 138°44′E / 34.59°S 138.73°E / -34.59; 138.73 (NE end) 34°43′S 138°34′E / 34.71°S 138.57°E / -34.71; 138.57 (SW end)
Type	Freeway
Length	23 km (14 mi)
Opened	13 September 2010
Route number(s)	National Highway M20
NE end	Gawler Bypass Road, Gawler, Adelaide
	Gawler Bypass Port Wakefield Road
SW end	Port Wakefield Road, Waterloo Corner
Major suburbs / towns	Angle Vale, Andrews Farm, Macdonald Park, Penfield
Highways in Australia National Highway Freeways in Australia Highways in South Australia

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 vehicles to 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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