Gawler Bypass

Gawler Bypass

South Australia
Gawler Bypass; South Australia
Coordinates	34°35′34″S 138°43′50″E / 34.592832°S 138.730490°E (North end); 34°38′03″S 138°43′45″E / 34.634192°S 138.729095°E (South end);
General information
Type	Freeway
Length	5.0 km (3.1 mi)
Route number(s)	A20 (2017–present)
Former; route number	A52 (2010–2017); (Evanston–Reid); National Highway A20 (1998–2010); National Highway 20 (1992–1998); National Route 20 (1955–1992); Entire route;
Major junctions
North end	Sturt Highway; Hewett, Adelaide
	Northern Expressway; Two Wells Road;
South end	Main North Road; Evanston, Adelaide
Location(s)
Region	Barossa Light and Lower North
Major suburbs	Evanston, Gawler West, Willaston
Highway system
	Highways in Australia; National Highway • Freeways in Australia; Highways in South Australia; ; ;

Gawler Bypass is a major north–south route in the outer northern suburbs of the city of Adelaide, South Australia, connecting Main North Road to the Sturt Highway, bypassing Gawler. The route was built in 1963 in an attempt to redirect traffic on the national highway out of Gawler town centre. It has been upgraded and realigned several times since then.

History

The first Gawler bypass was planned in the 1950s.^[3] It was first built as a single two-lane carriageway around the town in 1963, with at-grade intersections, and carried 3,000 vehicles per day.^[4] It ended at a tee-junction with Main North Road at the southern end, and followed an alignment that included what is now the southbound on-ramp and Brereton Road, Jack Cooper Drive over the Winckel Bridge,^[5] and Paternoster Drive to the railway bridge.

The road was rebuilt in the mid-1980s as a dual carriageway, with grade-separated intersections at the southern end in a new alignment, with new bridges over the Gawler River. At the time of approval, the bypass was carrying 7,000 vehicles per day. 300 collisions had been recorded between 1977 and 1982. It began construction at the end of 1985.^[4] Its total cost was $18 million, of which $13 million came from Federal funding.^[4]

In 2010, construction of the Northern Expressway realigned the northbound carriageway as part of creating a grade-separated intersection, with smooth traffic flow between the northern section of the bypass and both the Northern Expressway and the southern part of the bypass.^[6] As both roads lead broadly south, there is no provision to turn directly from one to the other. Road definitions also changed: the definition of Sturt Highway was lengthened a short distance west along the bypass to meet the expressway, resulting in a shortening of the bypass by a distance of 3.5km.

It was designated National Route 20, updated to National Highway 20 in 1992, and to National Highway A20 in 1998. This was changed to route A52, south of the intersection with Northern Expressway when it opened in 2010. From late 2016, the entire length was re-designated route A20. The Northern Expressway was re-designated route M2, instead of route M20.^[7]

Exits and interchanges

LGA^[8]	Location^[1]^[9]	km^[1]	mi	Destinations	Notes
Light	Ward Belt–Reid–Buchfelde tripoint	0.0	0.0	Sturt Highway (A20) – Nurioopta, Renmark, Mildura, Wagga Wagga	Northern terminus of bypass, route A20 continues north along Sturt Highway
	Ward Belt–Reid–Buchfelde tripoint	0.0	0.0	Northern Expressway (M2) – Waterloo Corner, Port Adelaide, Adelaide	Northbound exit and southbound entrance only
	Reid–Buchfelde boundary	1.5	0.93	Two Wells Road (B77) – Gawler West, Two Wells	Northbound entry and southbound exit only
Gawler River		2.2	1.4	Bridge over the river (bridge name unknown)
Gawler	Evanston–Hillier boundary	2.5	1.6	Jack Cooper Drive – Evanston, Evanston Gardens	Southbound entry and northbound exit only
	Evanston–Evanston Gardens boundary	3.7	2.3	Gawler railway line
	Evanston–Evanston Gardens–Evanston Park–Evanston South quadripoint	5.0	3.1	Adelaide Road (B19) – Evanston, Gawler	North-eastbound entry and south–western exit only
		5.0	3.1	Main North Road (A20) – Elizabeth, Gepps Cross, North Adelaide	Southern terminus of bypass, route A20 continues southwest along Main North Road
Incomplete access Route transition

Route diagram

Legend

Sturt Highway					Sturt Highway




Northern Expressway


Two Wells Road
Gawler River					Gawler River
					Ryde Street
Jack Cooper Drive



Gawler railway line					Gawler railway line
Dawson Road					Dawson Road

					Adelaide Road



Main North Road					Main North Road

References

^ ^a ^b ^c "Gawler Bypass" (Map). Google Maps. Retrieved 22 June 2022.
^ "Location SA Map viewer with regional layers". Government of South Australia. Retrieved 16 June 2022.
^ "Main North Road By-Pass Altered". The Bunyip. No. 5251. South Australia. 23 February 1951. p. 3. Retrieved 28 June 2016 – via National Library of Australia.
^ ^a ^b ^c Peter Morris, Minister for Transport Australia (9 May 1984). "$18 Million Gawler Bypass gets Go Ahead". Media Release. 71/84. Retrieved 28 June 2016.
^ "NEW PLAN OF MAIN NORTH ROAD". The Bunyip. No. 5237. South Australia. 3 November 1950. p. 1. Retrieved 28 June 2016 – via National Library of Australia.
^ "Sturt Highway Upgrade". Department of Planning, Transport and Infrastructure. Archived from the original on 24 October 2009. Retrieved 8 February 2017.
^ "Road Route Numbers (Trail Blazer)". Data SA. Government of South Australia. 8 November 2016. Retrieved 16 October 2017.
^ "Location SA Map viewer with LGA layers". Government of South Australia. Retrieved 16 June 2022.
^ "Location SA Map viewer with suburb layers". Government of South Australia. Retrieved 16 June 2022.

[gmaps-1] "Gawler Bypass" (Map). Google Maps. Retrieved 22 June 2022.

[SARegions-2] "Location SA Map viewer with regional layers". Government of South Australia. Retrieved 16 June 2022.

[3] "Main North Road By-Pass Altered". The Bunyip. No. 5251. South Australia. 23 February 1951. p. 3. Retrieved 28 June 2016 – via National Library of Australia.

[goahead-4] Peter Morris, Minister for Transport Australia (9 May 1984). "$18 Million Gawler Bypass gets Go Ahead". Media Release. 71/84. Retrieved 28 June 2016.

[5] "NEW PLAN OF MAIN NORTH ROAD". The Bunyip. No. 5237. South Australia. 3 November 1950. p. 1. Retrieved 28 June 2016 – via National Library of Australia.

[6] "Sturt Highway Upgrade". Department of Planning, Transport and Infrastructure. Archived from the original on 24 October 2009. Retrieved 8 February 2017.

[7] "Road Route Numbers (Trail Blazer)". Data SA. Government of South Australia. 8 November 2016. Retrieved 16 October 2017.

[SALGAs-8] "Location SA Map viewer with LGA layers". Government of South Australia. Retrieved 16 June 2022.

[SAlocs-9] "Location SA Map viewer with suburb layers". Government of South Australia. Retrieved 16 June 2022.

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v t e Road infrastructure in Adelaide
Freeways	South Eastern Freeway North–South Corridor Northern Expressway North–South Motorway (in progress) Southern Expressway Port River Expressway
Highways and major roads	Anzac Highway Adelaide–Mannum Road (North East Road) Gawler Bypass Glen Osmond Road Grand Junction Road Main North Road Main South Road Mount Barker Road Port Road Port Wakefield Road Portrush/Lower Portrush/Ascot/Taunton/Hampstead Roads Salisbury Highway Sir Donald Bradman Drive South Road Victor Harbor Road
Arterials and other roads	Churchill Road City Ring Route Cross Road Daws Road Elder Smith Road Flagstaff Road Fullarton Road Goodwood Road Grange Road Greenhill Road Henley Beach Road Kensington Road McIntyre/King Roads Magill Road Marion Road Melbourne Street Montacute Road Montague Road O'Connell Street Panalatinga Road Payneham/Lower North East Roads Philip Highway Prospect Road Regency/Muller Roads Tapleys Hill/Brighton/Ocean/Lonsdale/Dyson/Murray Roads The Parade Torrens Road Unley Road Victoria Road
City streets	Angas Street East Terrace Carrington Street Currie Street Flinders Street Franklin Street Gawler Place Gilbert Street Gilles Street Gouger Street Grenfell Street Grote Street Halifax Street Hindley Street Jeffcott Street King William Street Morphett Street North Terrace Pirie Street Pulteney Street Rundle Mall Rundle Street South Terrace Sturt Street Wakefield Street Waymouth Street West Terrace Wright Street
Transport in Adelaide; List of numbered roads in Adelaide

v t e Road infrastructure in South Australia
Expressways	South Eastern Freeway Port River Expressway Northern Expressway North–South Motorway (incomplete, under construction) Southern Expressway
Interstate highways	Barrier Highway Dukes Highway Eyre Highway Mallee Highway Princes Highway Stuart Highway Sturt Highway
State highways	Augusta Highway Gawler Bypass Horrocks Highway Main South Road Port Wakefield Highway Riddoch Highway Victor Harbor Road
Arterial roads	Adelaide–Mannum Road Alexandrina Road Barossa Valley Way Birdseye Highway Browns Well Highway Cameron Highway Copper Coast Highway Flinders Highway Flinders Ranges Way Glenelg Highway Gorge Road Goyder Highway Horrocks Highway Karoonda Highway Lincoln Highway Ngarkat Highway Olympic Dam Highway Onkaparinga Valley Road Playford Highway RM Williams Way Southern Ports Highway Spencer Highway St Vincent Highway Stott Highway Strathalbyn Road The Outback Highway Thiele Highway Tod Highway Wellington Road Wilkins Highway Wilmington–Ucolta Road Wimmera Highway Yorke Highway
Outback tracks	Anne Beadell Highway Birdsville Track Colson Track Gunbarrel Highway Maralinga to Emu Road Mount Davies Road Oodnadatta Track Strzelecki Track Vokes Hill Corner to Cook Road
Transport in South Australia; List of road routes in South Australia

History

Exits and interchanges

See also

References