Castlereagh Highway

Castlereagh Highway Queensland–New South Wales

Dick O'Brien Bridge (1991) carrying Castlereagh Highway over Barwon River, Walgett, NSW.

General information
Type	Highway
Length	790 km (491 mi)^[1]
Route number(s)	A55 (St George-NSW/Qld Border) B55 (NSW/Qld Border-Marrangaroo)
Former route number	National Route 55 (unknown) (St George-NSW/Qld Border) National Route 55 (unknown-2013) (NSW/Qld Border-Gilgandra) State Route 86 (unknown-2013) (Gilgandra-Marrangaroo)
Major junctions
North end	Carnarvon Highway St George, Queensland
	Gwydir Highway Kamilaroi Highway Newell Highway Golden Highway for full list see major intersections
South end	Great Western Highway Marrangaroo, New South Wales
Location(s)
Major settlements	Hebel, Walgett, Gilgandra, Mudgee, Cullen Bullen
Highway system
Highways in Australia National Highway • Freeways in Australia Highways in Queensland Highways in New South Wales
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The Castlereagh Highway is a 790-kilometre (490 mi)^[1] state highway located in New South Wales and Queensland, Australia. The highway's northern terminus is at a junction with the Carnarvon Highway, south of St George, Queensland. Its southern terminus is at a junction with the Great Western Highway at Marrangaroo, 10 kilometres (6.2 mi) north of Lithgow. From north the south the highway traverses South West Queensland and the North West Slopes, Orana, and Central West regions of New South Wales.

The highway is part of the 'Great Inland Way' linking Sydney and Cairns, and provides all-weather access to rugged black opal country of Lightning Ridge.^[2]

The Castlereagh Highway was named in 1954 after the Castlereagh River – which it parallels for most of its journey north from Gilgandra^[3] – with the river named in honour of Lord Castlereagh.^[4]

Route

The highway was extended past Gilgandra to include state route 86 in October 1997. As such the Castlereagh Highway starts just outside Lithgow at a junction with the Great Western Highway and runs in a north-westerly direction through Ilford and the junctions of Bathurst-Ilford Road and Bylong Valley Way, through the regional centre of Mudgee and Gulgong. From there the Castlereagh Highway is concurrent with the Golden Highway through Dunedoo, then branches off in Dunedoo, continuing past Gilgandra until it reaches the Queensland border via Walgett at Hebel. From there it continues to the outskirts of St George where it terminates with the Carnarvon Highway.^[5]

The highway was signed National Route 55 in 1974 north of Gilgandra, and State Route 86 south of Gilgandra. Queensland however signed the Carnarvon Highway as National Route 55 rather than the Castlereagh Highway, causing a major discrepancy for many years in that National Route 55 met the border at Hebel but abruptly begun again over 100 kilometres (62 mi) east along the border at Mungindi. The Queensland Road Department changed this and signed National Route 55 over the border north to Charters Towers in later years. This route was soon replaced with the A7 and A55 designations throughout Queensland in 2005, and the B55 designation in NSW during 2013 to Gilgandra and then south to Lithgow, replacing both State Route 86 and National Route 55.^[3]^[6]

Major junctions

State	LGA / LGA	Location	km^[1]	mi	Destinations	Notes
Queensland	Balonne	St George	0	0.0	Carnarvon Highway (A55) – St George, Surat, Roma Carnarvon Highway (46) – Goondiwindi, Mungindi and to Moree	T intersection northern terminus; north (A55) and southeast (46) as the Carnarvon Highway
		Noondoo	68	42	Noondoo-Mungindi Road – Mungindi	T intersection; Castlereagh Highway continues south
		Dirranbandi	88	55	Railway Street	T intersection; Castlereagh Highway continues south
		Dirranbandi	90	56	Dirranbandi Hebel Road	T intersection; Castlereagh Highway continues south
		Hebel	154	96	William Street – Goodooga	T intersection; Castlereagh Highway continues south
Queensland – New South Wales state border			165	103	Queensland – New South Wales state border	north as A55; south as B55
New South Wales	Walgett	Karloo	274	170	Gwydir Highway (B76) – Collarenebri	T intersection; Gwydir Highway south-western terminus; Castlereagh Highway continues south
	Walgett	Walgett	284	176	Kamilaroi Highway (no shield) – Narrabri	T intersection; Castlereagh Highway continues south; Kamilaroi Highway continues east
	Barwon River		287	178	Bridge over the river (no known name)
	Walgett	Walgett	289	180	Kamilaroi Highway (B76) – Narrabri	Castlereagh Highway continues south; Kamilaroi Highway continues west; concurrency terminus
	Namoi River		294	183	Bridge over the river (no known name)
	Castlereagh River		411	255	Bridge over the river (no known name)
	Castlereagh River		469	291	Bridge over the river (no known name)
	Gilgandra	Gilgandra	501	311	Oxley Highway – Warren, Nevertire	T intersection; Oxley Highway continues west; Castlereagh Highway continues south
			502	312	Newell Highway – Dubbo	T intersection; Newell Highway continues south and east: Castlereagh Highway continues east
			502	312	Newell Highway – Coonabarabran, Moree to Oxley Highway – Gunnedah, Tamworth, Port Macquarie	T intersection; Newell Highway continues north; Castlereagh Highway continues southeast; concurrency terminus
	Castlereagh River		508	316	Bridge over the river (no known name)
	Castlereagh River		547	340	Bridge over the river (no known name)
	Warrumbungle	Mendooran	553	344	Mendoran Road – Binnaway, Coonabarabran	T intersection; Castlereagh Highway continues east
	Warrumbungle	Dunedoo	591	367	Golden Highway – Dubbo	Y intersection; Golden Highway continues west
	Talbragar River		596	370	Bridge over the river (no known name)
	Warrumbungle	Dunedoo	601	373	Golden Highway – Merriwa to Singleton, Newcastle	T intersection; Castlereagh Highway continues south; Golden Highway continues east; concurrency terminus
	Wialdra Creek		645	401	Bridge over the river (no known name)
	Cudgegong River		663	412	Bridge over the river (no known name)
	Mid-Western	Ilford	725	450	Bylong Valley Way – Kandos, Rylstone, Bylong, Sandy Hollow	T intersection; Castlereagh Highway continues south; Bylong Valley Way western terminus
	Mid-Western	Ilford	727	452	Bathurst-Ilford Road – Sofala, Bathurst	Castlereagh Highway continues south
	Lithgow	Marrangaroo	790	490	Great Western Highway (A32) – Bathurst, Lithgow, Sydney	Directional T interchange; southern terminus; east and west as the Great Western Highway
1.000 mi = 1.609 km; 1.000 km = 0.621 mi Concurrency terminus Route transition

References

1 2 3 Great Western Highway & Castlereagh Highway & A32, Marrangaroo NSW 2790 to Ergon Sub Yard, 11252 Carnarvon Highway, Saint George QLD 4487 (Map). Google Maps, Google Inc. 2016. Retrieved 30 October 2016.
↑ "Welcome to Castlereagh Highway". Lonely Planet. 2016. Retrieved 30 October 2016.
1 2 "Castlereagh Highway (NSW)". Ozroads. Retrieved 30 October 2016.
↑ "Castlereagh River". Geographical Names Register (GNR) of NSW. Geographical Names Board of New South Wales. Retrieved 18 January 2013.
↑ "Map of Castlereagh Highway". Bonzle Digital Atlas of Australia. Digital Atlas Pty Limited. 2016. Retrieved 30 October 2016.
↑ "Castlereagh Highway (NSW)". Australian Towns, Cities and Highways. Brisbane, Australia: MG. June 2006. Retrieved 30 October 2016.

Road infrastructure in regional New South Wales

Motorways	Hume Motorway Hunter Expressway Pacific Motorway (Brisbane–Brunswick Heads) Pacific Motorway (Sydney–Newcastle) Princes Motorway

National highways	Barton Highway Federal Highway Hume Highway New England Highway Newell Highway Sturt Highway

Highways	Barrier Highway Bruxner Highway Carnarvon Highway Castlereagh Highway Cobb Highway Great Western Highway Gwydir Highway Illawarra Highway Kamilaroi Highway Kings Highway Mid-Western Highway Mitchell Highway Monaro Highway Murray Valley Highway Olympic Highway Oxley Highway Pacific Highway Princes Highway Riverina Highway Silver City Highway Snowy Mountains Highway

Local highways	Alpine Way Appin Road Barry Way Bathurst-Ilford Road Bells Line of Road Bucketts Way Burley Griffin Way Bylong Valley Way Camden Valley Way Castlereagh Highway Central Coast Highway Escort Way Fossickers Way Golden Highway Goldfields Way Goulburn-Oberon Road Henry Lawson Way Irrigation Way Kidman Way Lachlan Valley Way Memorial Drive Newcastle Inner City Bypass Newcastle Link Road O'Connell Road Old Hume Highway Picton Road Princes Highway Putty Road Remembrance Drive Summerland Way Thunderbolts Way Waterfall Way Wombeyan Caves Road Yass Valley Way

Bridges	Denison Bridge Grafton Bridge Harwood Bridge Hampden Bridge Macleay River Bridge Martin Bridge Mooney Mooney Bridge Nowra Bridge Sea Cliff Bridge Tea Gardens-Hawks Nest Bridge

Tunnels	Cudgen Road Tunnel St Helena Tunnel

Proposals	Sydney Bypass

Road infrastructure in Queensland

Motorways	Airport Link Bruce Highway Clem Jones Tunnel Centenary Motorway Gateway Motorway Inner City Bypass Ipswich Motorway Legacy Way Logan Motorway Pacific Motorway (Brisbane–Brunswick Heads) Port of Brisbane Motorway Smith Street Motorway Sunshine Motorway Western Freeway

National highways	Barkly Highway Bruce Highway Cunningham Highway Gore Highway Landsborough Highway Leichhardt Highway New England Highway Warrego Highway

Highways	Balonne Highway Barwon Highway Brisbane Valley Highway Burnett Highway Bunya Highway Capricorn Highway Captain Cook Highway Carnarvon Highway Castlereagh Highway D'Aguilar Highway Dawson Highway Donohue Highway Flinders Highway Gold Coast Highway Gregory Highway Isis Highway Kennedy Highway Leichhardt Highway Mitchell Highway Moonie Highway Mount Lindesay Highway Mulligan Highway Outback Highway Palmerston Highway Peak Downs Highway Wide Bay Highway

Developmental roads / Outback tracks	Bamaga Road (Telegraph Road) Birdsville Track Burke Developmental Road Bulloo Developmental Road Cooper Developmental Road Diamantina Developmental Road Eyre Developmental Road Fitzroy Developmental Road Gregory Developmental Road Gulf Developmental Road Kennedy Developmental Road Peninsula Developmental Road Savannah Way Suttor Developmental Road Wills Developmental Road

Proposals	Bruce Highway Upgrade Mackay Ring Road Toowoomba Second Range Crossing Townsville Ring Road Kenmore Bypass

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Castlereagh Highway

Route

Major junctions

See also

References