Ernest Junction railway tunnel is a heritage-listed former railway tunnel at 797 Ashmore Road, Molendinar, Gold Coast City, Queensland, Australia. It was built from 1885 to 1889 by the Queensland Railway Department. It was added to the Queensland Heritage Register on 3 May 2019.
History The Ernest Junction railway tunnel, in the Gold Coast suburb of Molendinar, situated approximately west of Southport, was constructed in 1889. Built as part of the South Coast railway line which ultimately connected Brisbane to Tweed Heads, it is one of the last remnants of this important railway infrastructure on the South Coast (now known as the Gold Coast), and the only extant tunnel from a decommissioned line which was essential to the South Coast's agricultural and tourism industries. The line was closed in 1964 and the rail tracks were removed from the tunnel.
The Gold Coast district forms part of the traditional land of the Yugambeh people. European settlement began in the South Coast in 1840s with a fledgling timber industry, which utilised large rivers such as the Nerang River and the Tweed River to carry logs downstream to the coast to be shipped to Brisbane or Sydney.Robert Longhurst, Nerang Shire: A History to 1949, Albert Shire Council, Nerang, 1994, p.12. By the 1870s sugarcane had become the predominant crop, as selectors established farms throughout the Nerang district. A small township emerged and from 1871 Cobb and Co. coaches arrived regularly. Nerang Creek Heads, as Southport was known at this time, soon became a holiday destination for some of the colony's elite, with several large houses built overlooking the sea. By the end of the 1870s numerous stores, a hotel and a jetty had been established and visitors could either travel from Brisbane by coach or along the coast by boat.Robert Longhurst, Southport: Images of Yesteryear 1880-1955, Gold Coast City Council, 1994, pp. 8-10Robert Longhurst, Nerang Shire: A History to 1949, Albert Shire Council, Nerang, 1994, p.86.
In the 1880s the popularity of Southport as a seaside holiday destination surged and it was soon the principal seaside resort in Queensland. The construction of major schools, banks, guesthouses and more hotels stimulated Southport's growth as a fashionable 19th century resort, as did the presence of the Governor of Queensland's residence in the 1890s.
In 1885 a rail line to Loganlea from Yeerongpilly was opened, and soon after reached Beenleigh. Subsequent requests were made to the government for the extension of the line to the South Coast. A detailed survey was carried out by the Department of Railways, and in 1885 Queensland Parliament authorised the construction of this railway line extension. The line would divide in two, with a branch to Southport and another to Nerang. Although the provision of transport for passengers to the holiday destination was an important factor, the foremost consideration was to provide efficient transportation for farm produce.The Queensland Times, Ipswich Herald and General Advertiser, 29 October 1885, p.4Alan Arundel, The South Coast Railway: A History of Growth and Transport on the Gold Coast, Water Street Publications, Brisbane, 2011, pp.6-7LHR 0075, Currumbin Creek Railway Bridge (former), City of Gold Coast.
The line between Beenleigh and Southport/Nerang was named the South Coast Railway Line. The construction of the line was contracted to experienced railway builder, George Bashford in 1886.John Kerr, Triumph of Narrow Gauge: A History of Queensland Railways, Boolarong Publications, 1990, p.70. Despite a good start, floods in January 1887 delayed the work, which resulted in Bashford becoming insolvent and disappearing. The Queensland National Bank then took over the project.The Queenslander, 28 January 1888, p.139John Kerr and John Armstrong, Destination South Brisbane: An Illustrated History of the Southside Railways of Brisbane, Australian Railway Historical Society, 1984, p.38John Kerr, Triumph of Narrow Gauge: A History of Queensland Railways, Boolarong Publications, 1990, p.70Alan Arundel, The South Coast Railway: A History of Growth and Transport on the Gold Coast, Water Street Publications, Brisbane, 2011, p.8. Along the line, 10 stations were constructed (with Yatala and Coombabah closing in 1891), as well as three substantial bridges over the Albert River, Coomera River, and Nerang River.
Only one tunnel was planned along this line. Initially known as the Southport Junction tunnel, it cut through a large hill between Coombabah and Southport Junction stations.Telegraph, 4 December 1888, p.5John Kerr and John Armstrong, Destination South Brisbane: An Illustrated History of the Southside Railways of Brisbane, Australian Railway Historical Society, 1984, p.38. The tunnel was concrete, long and located at a depth of from the crest of the hill. It curved to the right just after its western entrance, providing no straight view through the tunnel.Alan Arundel, The South Coast Railway: A History of Growth and Transport on the Gold Coast, Water Street Publications, Brisbane, 2011, p.25Queenslander, 26 January 1889, p.157. Construction had begun by April 1887 when it was reported that:Brisbane Courier, 10 August 1887, p.6."a top heading has been driven from each end, and a shaft has been sunk midway from the crown. The tunnel consists of very hard rock and entails heavy work".On 1 July 1887, a tragic accident occurred when three of the men constructing the tunnel, McDuffy, O'Brien and Christidon, were buried by of debris following an explosion from the dynamite they were using to blast the rock. The three men "were attempting a second time to fire off a dynamite blast, it unexpectedly exploded". O'Brien and Christidon survived the accident. McDuffy was killed.The Queenslander, 2 July 1887, p.1.
In December 1888, further progress was outlined in The Telegraph which stated that the "tunnel is six chains long and is carried through hard blue rock. It is lined with concrete, the height being 15 feet above railway level. The hill, through which the tunnel is taken, is about 68 feet above rail level".Telegraph, 4 December 1888, p.5. The tunnel was completed by January 1889.
The replacement of brick or stone with concrete for tunnel linings was a recent technical development in Queensland. The 1880s was an important period for the adoption of concrete for the construction of Queensland Railway infrastructure. Concrete was first used during the extension of the Southern railway line from Warwick to Stanthorpe (constructed 1878–1881) due to the influence of civil engineer Charles Lambert Depree. Resident engineer on the extension from 1875 to 1878, Depree is attributed with the design of concrete culverts, the Gorge Dam retaining wall and the Cherry Gully Tunnel on the line.Helen Bennett, Vanishing Heritage, Queensland's Precast Reinforced Concrete Railway Buildings, 1910s to 1960s, Report for Queensland Rail, February 2019, p.13 The Cherry Gully tunnel was the first tunnel in Queensland to use concrete; however, it was partially constructed with brick. Henry Charles Stanley, Chief Engineer of the Railway Department, reported in 1880 that the use of concrete, instead of bricks, for the tunnel provided a considerable saving for the department.Brian Webber, Railway Tunnels in Queensland, Australian Railway Historical Society, Queensland Division, 1997, p.24. Another saving gained by using concrete was the ability to utilise cheaper, unskilled labour to carry out the work, rather than skilled brick-layers.Helen Bennett, Vanishing Heritage, Queensland's Precast Reinforced Concrete Railway Buildings, 1910s to 1960s, Report for Queensland Rail, February 2019, p.13. The 1882 Normanby Tunnel (no longer extant) on the Brisbane exhibition loop was wholly constructed of concrete, followed by the Woolloongabba Branch Tunnel in 1884 (no longer extant).Brian Webber, Railway Tunnels in Queensland, Australian Railway Historical Society, Queensland Division, 1997, pp.24-28. The construction of the Ernest Junction Tunnel occurred at the same time as the fifteen built for the ascent of the coastal range for the Cairns-to-Kuranda railway line, although the South Coast line opened earlier.Cairns Post, 12 December 1888 p.2
By the time the Ernest Junction Tunnel was constructed, standardised drawings were used, with variations made to suit each individual tunnel.Queensland Railway Department, Railway Survey Book, "Beenleigh - Nerang and Southport Line", 1886, M33 1431, p.13. For example, at Ernest Junction the tunnel's dimensions and semi-elliptical portals were standard; however, the length and curve and gradient in the track differed from other tunnels. Other examples of the early use of concrete lining in tunnels are the Dularcha railway tunnel (1890); the Yimbun railway tunnel (1910); and the Muntapa Tunnel (1913).
On 25 January 1889 the line to Southport was officially opened. Dignitaries travelled from Brisbane to Southport railway station where they were greeted by several hundred people celebrating the occasion.Brisbane Courier, 25 January 1889, p.6. Six months later, in July 1890, the branch to Nerang railway station was opened with considerably less fanfare. Southport Junction Station was at the divide of the line, with the two separate branches, Southport (to the east of the station) and Nerang (to the south of the station), leaving from there. In 1890, the Southport Junction station's name was changed to Ernest Junction Station, to honour the respected local Member of Parliament at the time, Ernest James Stevens. The name of the tunnel was also changed to the Ernest Junction tunnel.Logan Witness, 12 April 1890, p.2John Kerr and John Armstrong, Destination South Brisbane: An Illustrated History of the Southside Railways of Brisbane, Australian Railway Historical Society, 1984, p.41. Initially, all trains travelled to Southport from Ernest Junction. A separate branch shuttle was provided to take passengers to Nerang from Ernest Junction.
Not long after the opening of the Southport/Nerang line, representatives from the district requested the South Coast line be extended to Coolangatta and Tweed Heads. A coach service had been taking passengers from the Nerang station to the increasingly popular holiday destinations at Coolangatta and Tweed Heads. It was believed that a line extension would also benefit the farming communities along the requested railway line.Brisbane Courier, 30 October 1896, p.4John Kerr, Triumph of Narrow Gauge: A History of Queensland Railways, Boolarong Publications, 1990, p.107. In December 1900 Queensland Parliament approved the rail extension, which was completed by September 1903. The opening was reported in The Telegraph which stated that the "railway to the Tweed Heads will be opened today without ceremony".Telegraph, 14 September 1903, p.7. It was intended that the Tweed Heads line would eventually link up to the New South Wales rail network from Murwillumbah; however, this did not eventuate.Alan Arundel, The South Coast Railway: A History of Growth and Transport on the Gold Coast, Water Street Publications, Brisbane, 2011, p.10.