The William Street tunnel is a railway tunnel under the central business district of Perth, Western Australia. Built between 2004 and 2007 as part of the construction of the Mandurah line, the tunnel connects the Mandurah line to the Yanchep line, running under William Street for much of its length. It consists of 690 metres (2,260ft) of twin bored tunnel and 1,158 metres (3,799ft) of cut-and-cover tunnel, with two stations: Perth Underground and Elizabeth Quay.
The construction of the Mandurah line was divided into eight contract packages. The William Street tunnel was part of Package F, also known as the City Project, the contract for which was awarded to Leighton–Kumagai Gumi in February 2004 for $324.5million. Preliminary works began the same month, and tunnelling began in October 2005, starting from Elizabeth Quay station and heading north. Boring for the first tunnel was completed in June 2006, after which, the tunnel boring machine was transported back to Elizabeth Quay to dig the second tunnel. The second tunnel was significantly faster to bore, being completed in October 2006.
Construction was significantly disrupted by industrial action, which culminated in the prosecution of 107 workers for illegally striking in February and March 2006 following the issuance of a strike ban by the Australian Industrial Relations Commission. The strikes, along with complications involving heritage protection at Perth Underground station, engineering challenges on the foreshore, and contract disputes, resulted in the tunnel's opening being delayed beyond December 2006. The first train entered the tunnel in August 2007, and the tunnel opened to passengers on 15 October 2007, ahead of the rest of the Mandurah line's opening on 23 December 2007. The final cost, after contract disputes were settled, was $439.3million.
The William Street tunnel consists of approximately 690 metres (2,260ft) of twin bored tunnel and 1,158 metres (3,799ft) of cut-and-cover tunnel, for a total length of 1,848 metres (6,063ft). The tunnel has two stations:[1]Perth Underground, which was known during construction as William Street station, and Elizabeth Quay station, which was known before 2016 as Esplanade station.[2][3] Trains in the William Street tunnel are part of both the Mandurah and Yanchep lines between Perth Underground and Elizabeth Quay stations. North of Perth Underground is the Yanchep line and south of Elizabeth Quay station is the Mandurah line.[4] The bored tunnels have an internal diameter of 6.16 metres (20ft 3in), with 275-millimetre-thick (10.8in) lining.[5][6] The rails range from 9 to 21 metres (30 to 69ft) below ground level. The tunnel is designed to last 120 years.[5]
The southern cut-and-cover portion, a distance of approximately 648 metres (2,126ft), commences east of the Mitchell Freeway along the Swan River foreshore, and ends at the intersection of Mounts Bay Road and William Street, where Elizabeth Quay station is. North from the station, the tunnel runs under William Street as two bored tunnels, one for each track. The tunnel veers east of William Street to reach Perth Underground station, which was dug cut-and-cover. The bored tunnels then bend west to enter the rail corridor west of Perth station, which is the former Perth marshalling yard. The tunnel then has a 200-metre (660ft) ramp structure taking the tunnel up to the surface to connect with the rest of the rail network.[1] This was originally not part of the tunnel, but the ramp was covered as part of the Perth City Link in the 2010s.[7][8] The minimum curve radius for the tunnel is 135 metres (443ft) due to geometric constraints, far below the minimum curve radius of 700 metres (2,300ft), used elsewhere on the Mandurah line.[9][10]
Planning
Initial plans for the Mandurah line, created by a Liberal state government. had it branch off the Armadale line at Kenwick, which did not require a tunnel through Perth's central business district (CBD). Experts, including Murdoch University professor Peter Newman, called for a direct route to be constructed instead, which would have necessitated a tunnel through the CBD.[11] The Labor Party nonetheless supported the Kenwick route in the lead up to the 2001 state election.[12] After Labor's election victory though, the new Cabinet of Western Australia decided in July 2001 that the direct route would be constructed instead of the Kenwick route.[13][14][15] The route through the CBD was to have a tunnel portal along William Street between St Georges Terrace and Mounts Bay Road, with the railway in a cut-and-cover tunnel north from there and elevated south from there.[16] The direct route was strongly criticised by the lord mayor of Perth, Peter Nattrass, who said the railway line along the Swan River foreshore would be an "eyesore" like the Cahill Expressway in Sydney.[14][17] The minister for planning and infrastructure, Alannah MacTiernan, tried to allay his fears by saying that the section along the foreshore would instead be tunnelled and not at or above ground level.[18]
Routes shortlisted by the Perth City Rail Advisory Committee in March 2002: The western route (blue), central route (red), and eastern route (green).'"`UNIQ--ref-00000031-QINU`"'
In response to criticism of the Mandurah line's route through the Perth CBD, the Perth City Rail Advisory Committee was formed in October 2001 to assess other options. The committee consisted of eight members, including engineers, planners, and representatives from the Property Council and the Perth City Council, and was tasked with submitting its report in February 2002.[19][20] The report was delayed as the committee found it hard to reach a consensus;[21][22] it was released on 14 March 2002. It assessed sixteen options, of which three were shortlisted:[23][24]
The western route runs along the Mitchell Freeway, entering a tunnel south of Malcolm Street to veer out of the freeway median strip, before bending east to surface in the existing rail corridor, terminating at Perth station from the west. There would be an underground station at Elder Street between Hay and Murray streets, near Parliament House. The estimated cost of the western route was $140.1million. This option required reversing trains at Perth station to retain through-running with the Joondalup line, necessitating an additional train for $18million. This was the committee's second-most preferred route.[25]
The central route runs in a cut-and-cover tunnel along William Street, bending west to connect with the Joondalup line. There would be underground stations at William Street near the Esplanade Busport and at William Street between Murray and Wellington streets, with a walking connection to the existing Perth station. This route differs from the government's proposed route planned by the Perth Urban Rail Development office by having the line underground south of The Esplanade instead of elevated. The estimated cost of this option was $139million. This was the committee's least preferred route, due to the significant disruption caused by the cut-and-cover construction.[26]
The eastern route runs in a bored tunnel parallel to Mounts Bay Road and The Esplanade, before bending north to run along Irwin Street, then bending west to reach Perth station. There would be underground stations at the Esplanade Busport and Irwin Street near Hay Street. The estimated cost of this option was $311million. This was the committee's preferred route. Another route considered involved tunnelling under St Georges Terrace instead of along Mounts Bay Road and The Esplanade; this was ruled out due to its high cost, risks, and disruption to St Georges Terrace to construct a station there.[27]
The state government ruled out the eastern route as it cost more than twice the other routes.[28] The remaining two routes were opened up to public consultation over the following month.[29][30][31] The western route was the Perth City Council's preferred route, due to its limited impact on businesses.[24] However, that route would cause significant disruption to the Mitchell Freeway during construction[32] and integrate poorly with the surrounding area.[33] In April 2002, the Perth City Rail Advisory Committee was re-established to conduct a more detailed analysis on the two remaining routes,[34][35] with the central route to be considered as a bored tunnel rather than cut-and-cover.[36] An opinion poll by The West Australian newspaper found that 39 percent of respondents supported the central route and 35 percent of respondents supported the western route.[37] The Perth City Rail Advisory Committee completed its second report in May 2002, which recommended the central route.[38][39][40] State Cabinet endorsed this route in June,[41][42] with Lord Mayor Peter Nattrass now being in support of the improved central route.[42] A master plan for the Mandurah line's direct route was released in August 2002.[43][44]
Procurement
The City Project was designed and constructed as part of Package F of the Southern Suburbs Railway project.[45] Geotechnical testing by Golder Associates occurred between January and March 2003.[46][47][48] Expressions of interest for Package F were called for in March 2003[49] and closed in April 2003. Five consortia submitted expressions of interest:[50]
The roof of the William Street tunnel (left) was extended to Milligan Street, in conjunction with the sinking of the Fremantle line (right) in 2012 and 2013
A design change was announced in July 2003: the William Street bridge on the foreshore was now to be demolished. The $1.3million cost was to be offset by changes to the project's design, including leaving a 135-metre (443ft) section of the tunnel uncovered within the freeway interchange and using natural light and ventilation for Esplanade station. Concerns were raised regarding an increase in traffic congestion due to the removal of the bridge, but Lord Mayor Nattrass supported the removal of the bridge because it allowed for a future redevelopment of the foreshore.[51][52][53] After lobbying from the Perth City Council,[54] consideration was given to sinking the Fremantle line within Northbridge as part of the William Street tunnel's construction. The state government attempted to reach an agreement for the City of Perth to fund the sinking in exchange for the city receiving the right to develop the land on top of the railway,[55] but with an estimated cost of $200million, it was deemed too expensive.[56][57] This section of railway was later sunk for $360million as part of the Perth City Link project in 2012 and 2013,[58][59] the new tunnel passing just 1.2 metres (4ft) above the William Street tunnel.[60] In conjunction with this, the roof of the William Street tunnel was extended from Lake Street to Milligan Street, enabling development above the tunnel.[7][8]
CityConnect and the Leighton–Kumagai Gumi Team were shortlisted in May 2003,[61][62] and in November 2003, the Leighton–Kumagai Gumi Team was selected as the preferred proponent.[63][64] The managing director of Clough, CityConnect's lead contractor, had expressed that he did not want to agree to the government's requirement that the contractor take all the risk for cost escalation due to unknowns such as soil conditions and heritage buildings.[65][66] The following month, the contract was approved by Cabinet, with a $100million cost increase announced as well, taking the cost of New MetroRail to $1.059billion. The cost increase prompted shadow transport minister Katie Hodson-Thomas to call for the project to be "reconsidered" and National Party lead Max Trenorden to call for MacTiernan to be stood aside pending a parliamentary review into the project.[67][68] In February 2004, the contract was signed for $324.5million.[69][70][71]
Due to pressure from the Liberal and Greens parties, MacTiernan promised in January 2004 to table the contract in Parliament, although Leighton opposed this.[72][73][74] The contract was controversial due to the previous cost blowout and the risks of tunnelling. MacTiernan promised that almost all the risk would be on the contractor as it was a fixed-price contract,[75] with the state liable for underground building anchors and the relocation of power and water utilities.[76] The contract was tabled on 2 March 2004. MacTiernan claimed it was "the first time that the contract for such a construction project have been publicly released".[77] The contract stated that delays beyond October 2006 would incur a penalty of $54,000 per day for the contractor.[78] Throughout construction, MacTiernan emphasised that it was a fixed-price contract in response to speculation about cost blowouts.[79] In August 2005, the state's auditor general released a report which said the City Project's contract management had been good, but that further cost escalations were possible.[80][81][82][83]
Esplanade station in February 2005. Excavation of the station box has begun.
A ceremony was held on 26 February 2004 for the start of preliminary drilling and surveying, which was the first physical work done for the Southern Suburbs Railway.[84][85][86] Lane and road closures began in March 2004, starting with William Street, Wellington Street and the Horseshoe Bridge on 15 March, and followed by Barrack Street, Riverside Drive and The Esplanade the following month.[87][88][89] Demolition of buildings to make way for the William Street station began in April 2004.[90][91] The William Street bridge was demolished in August 2004. It was intended that the freeway interchange road layout would be redesigned to be more pedestrian friendly.[92] By October 2004, construction was several weeks behind schedule due to delays caused by demolition and retaining the heritage-listed Wellington Building at the William Street station site, and equipment problems at the Esplanade station site.[93]
By October 2005, the Joondalup line tracks had been slewed 6 metres (20ft) to the south. Following this, the northern cut-and-cover tunnel within the rail corridor was completed, allowing for the Fremantle line to be slewed north above it, making room for the Roe Street drive structure to be built between the two lines.[94] During excavation along the foreshore section of the tunnel, six wooden jetty piers were uncovered, dating back to before the Mounts Bay was reclaimed.[95] It was planned for there to be an art installation at the tunnel's southern entrance, made of twenty reused sheet piles sticking out 24 metres (79ft) high, painted on one side and left bare on the other.[96] This art installation was cancelled in September 2007.[97]
Tunnelling
The tunnels were dug by a single tunnel boring machine (TBM) named the Sandgroper, after the endemic insect.[98] The TBM was launched from Esplanade station, boring north to the Roe Street dive structure, before being transported back to Esplanade station to bore the second tunnel. Due to the tunnel being dug at a shallow level below buildings on William Street through sandy soil with high groundwater, an earth pressure balance TBM was chosen,[10] which provides pressure at the cutter head to minimise ground settlement.[99] Special features of the TBM included a ground anchor detector, due to the ground anchors left behind following the construction of basements along William Street.[100] Manufactured by Mitsubishi Heavy Industries in Kobe, Japan, the TBM cost $10million, was 60 metres (200ft) long and weighed 300 tonnes (330 tons).[101][102][103] The TBM arrived in Perth in April 2005.[98] and was lifted into the Esplanade station box on 14 August 2005.[104]
The start of tunnelling was delayed by several weeks due to mechanical problems with the TBM, including problems with jacking rings used to position the TBM and the conveyor belt.[105][106] Tunnelling from Esplanade station began on 25 October 2005.[104][106] Grout was injected into the ground underneath buildings above the tunnel's path to reduce ground movement.[105][106] Initial planning aimed for the TBM to bore 4 metres (13ft) per day, increasing to 10 metres (33ft) per day. However, after one week the TBM had bored just 3.5 metres (11ft). Progress was slow due to problems with o-rings, which needed to be replaced.[107] There were further delays the following week due to industrial action.[108] It was intended that the first tunnel between the Esplanade and William Street stations, a distance of 470 metres (1,540ft), would be completed before Christmas,[105] but by the start of Christmas break, the TBM had bored a distance of 240 metres (790ft).[109] Tunnelling resumed early from the Christmas break to make up for lost time.[110]
The TBM broke through into William Street station on 7 February 2006,[104][111] and reached the Roe Street dive structure on 3 June 2006, twelve days ahead of schedule.[104][112][113] The TBM reached William Street station for the second time on 31 August 2006[114] and reached the Roe Street dive structure on 24 October 2006.[104][115][116] The maximum speed attained was 19 metres (62ft) over a 24-hour period.[103] As no buyer was found for the TBM, it was dismantled and sold for parts.[117][118]
Opening
Perth rail yard facing east towards Perth station and the tunnel. On the left is the Fremantle line, the middle is the tracks leading to the tunnel, and the right is the Joondalup line.
Perth rail yard facing west. The photograph was taken on 6 October 2007, two days before the Fremantle and Joondalup lines were shut down for the middle two tracks to be connected.
In April 2005, MacTiernan revealed that the New MetroRail project completion date had been delayed from December 2006 to April 2007 due to the City Project not being projected to finish construction until December 2006. The delays were attributed on the heritage protection works at Perth Underground station, engineering challenges on the foreshore, and industrial disputes.[119][120] The possibility for further delays caused by the City Project was first raised by the Public Transport Authority in December 2005.[121] In April 2006, she announced that the City Project's likely completion date had been delayed to April 2007, which meant the Mandurah line would not open until July 2007.[122] In April 2007, MacTiernan revealed another delay, this time with the likely opening date being October 2007.[123]
The first train ran through the William Street tunnel in August 2007.[104][124][125] The City Project reached practical completion in September 2007 and was handed over to the PTA on 10 September.[126][127] From 7 to 14 October, the Fremantle line was fully closed and the Joondalup line was closed south of Leederville station so that the William Street tunnel's tracks, signalling, electrical, and communications systems could be connected to the rest of the network.[104][128][129] The William Street tunnel and its two stations opened to the public on 15 October 2007.[130][131][132] The rest of the Mandurah line opened on 23 December 2007.[133][134][135]
Industrial action
About three hundred workers went on strike from 11 November 2004, complaining about long working hours.[136] The Western Australian Industrial Relations Commission ordered that they returned to work two days later,[137] but the workers voted in favour of defying the order.[138][139][140] MacTiernan took a hands-off approach regarding the strike, saying it was a matter between the Construction, Forestry and Maritime Employees Union (CFMEU) and Leighton–Kumagai Gumi.[141][142] The strikers returned to work after two weeks, with a deal being reached on 26 November for better pay for nightshift workers.[143] Workers went on strike for two days in January 2005 due to smoke haze,[144][145] which was deemed valid by the Australian Industrial Relations Commission.[146] Two hundred and fifty workers went on strike for two days in April 2005 after two union officials were allegedly assaulted by a subcontractor working for Leighton on another package.[147][148] MacTiernan revealed in May 2005 that the City Project was subject to twenty-eight days lost due to strikes, the most days out of any of the Southern Suburbs Railway project's packages.[149]
Four hundred workers went on strike for a day in July 2005 due to an incident where a digger hit a cable on Wellington Street.[150] More than two hundred workers went on sick leave for several days in August 2005, which was described as a case of "blue flu".[151][152][153] In October 2005, a two-day strike occurred, with workers claiming they were being made to do excessive overtime.[154] In November 2005, over four hundred workers went on strike for several days, pausing tunnel boring. The workers failed to follow a return-to-work order given by the Australian Industrial Relations Commission.[155] Later that month, the workers at the Esplanade station site went on strike for one day due to safety concerns.[156] Leighton–Kumagai told the commission in its application for a strike ban that unscheduled stoppages to tunnelling would change the pressure at the TBM's cutter head, which could potentially cause pipes to burst, buildings to crack and potholes to appear in roads.[157] The contractor also told the commission that it had lost forty-six days of work to industrial action since July 2004.[158] The Australian Industrial Relations Commission issued a strike ban for the remainder of the project in December 2005,[159][160] which the CFMEU said it planned to disobey.[161]
In February 2006, Leighton filed a writ in the Supreme Court of Western Australia against the CFMEU and its assistant secretary Joe McDonald, for having allegedly "unlawfully interfered in its business and in its relationship with its employees and subcontractors".[162] Leighton and the CFMEU reached a pre-trial settlement in November 2006, with the CFMEU paying Leighton $150,000 plus legal costs and the CFMEU admitting to breaching the Building and Construction Industry Improvement Act twenty-nine times.[163][164] Leighton and the CFMEU reached another out-of-court settlement in July 2009, worth millions of dollars.[165]
Over 400 workers went on strike starting 24 February 2006 due to a shop steward being dismissed for telling other workers to go home without permission from management, violating the strike ban.[166] On 28 February, they voted to remain on strike until the unfair dismissal claim was heard in the Industrial Relations Commission.[167][168] MacTiernan criticised the strike, but said that there was nothing she could do as the state government was just the client and that it was the contractor's responsibility to find a solution.[167][169] Leighton said that the state government could deregister the union, pass legislation protecting the project, or launch its own legal action against the union,[170][171] while the state opposition said that the striking workers should be dismissed.[172] The Industrial Relations Commission refused to expedite the unfair dismissal hearing while the strike was ongoing.[173][170] The strikers voted on 8 March to return to work.[174][175] In July 2006, the Australian Building and Construction Commission issued writs against 107 workers for defying the strike ban in February 2006.[176][177] This was the first time that the Industrial Relations Commission sued the individual workers rather than the union, which was done as the strike was against the advice of the union.[178] The prosecution of those workers was described as "unprecedented" by the Australian Institute of Employment Rights, and relied on the Building and Construction Industry Improvement Act 2005 passed by the Howard government, which was criticised for removing the right to strike.[179] Eighty-seven workers admitted the strike was illegal in October 2007.[180] Leighton claimed the strike had cost them more than $1,280,000 and had created safety issues for tunnelling.[178] In December 2007, the Federal Court fined the workers up to $9,000 for striking and $1,000 for ignoring a return to work order from the Industrial Relations Commission.[181]
Contract disputes
Throughout 2004 and 2005, the Leighton–Kumagai joint venture claimed that the Public Transport Authority owed them $50million due to cost overruns. In early 2006, the joint venture claimed an additional $141million for cost overruns[182][183][184] resulting from unforeseen ground conditions, labour strikes, delays in demolition, and the difficulty in preserving heritage buildings. MacTiernan said that the claims were unfounded and that the state government would not pay for the cost overruns.[184][185] Leighton had initially expected to make an $8million profit on the project, which was reduced to a $10–15million loss.[186] Leighton CEO Wal King met with Premier Alan Carpenter in an attempt to reach an agreement.[187] The claims had risen a further $13million by March 2006, reaching a total of $204million. MacTiernan said that only a small portion of that total would be paid out.[188]
Leighton filed a writ in the Supreme Court of Western Australia in April 2006 seeking to be relieved from its contractual obligations due to the PTA's failure to establish insurance for the whole cost of the contract, or alternatively have the practical completion deadline extended until the PTA provides the insurance. By this point, tunnelling had stopped because the joint venture did not want to start the most challenging phase with the proper insurance to cover potential risks such as cave-ins.[189][190] Tunnelling resumed on 8 May after an agreement was reached for the government to cover insurance claims until the Supreme Court determines the appropriate level of insurance.[191]
The cost overrun claims were divided into several separate Supreme Court writs. The first writ, filed in June, related to the contract's rise and fall provisions, which specified that an Australian Bureau of Statistics (ABS) index would be used to calculate the escalating cost of labour and materials. The ABS discontinued the index soon after the contract was signed, so the dispute related to which alternative method should be used.[192] Another writ was filed in June 2006, seeking damages to cover the cost of disposing of contaminated soil and an extension to the practical completion deadline.[193] By September 2007, there was another writ for the costs of dewatering.[194]
The trial for the rise and fall provisions dispute started in September 2007.[195][196] In September 2008, the court ruled in favour of Leighton, awarding them about $6million in damages.[197][198] All legal action ended with a $43.675million settlement in May 2009, bringing the total cost of the City Project to $439.3million, excluding legal fees.[199][200]
↑ Robb, Trevor (21 July 2001). "The radical rail plan". The West Australian. p.9.
↑ Robb, Trevor (17 July 2001). "Nattrass vows united fight on new rail route". The West Australian. p.6.
↑ Robb, Trevor; Capp, Geraldine (18 July 2001). "Rail link row cools down". The West Australian. p.4.
↑ MacTiernan, Alannah (31 October 2001). "City rail options to be examined" (Press release). Government of Western Australia. Archived from the original on 31 October 2023. Retrieved 31 October 2023.
↑ Robb, Trevor (1 November 2001). "Minister puts rail options on track". The West Australian. p.36.
↑ Robb, Trevor (1 March 2002). "Team stuck on city rail route". The West Australian. p.14.
↑ MacTiernan, Alannah (14 March 2002). "City Rail options released" (Press release). Government of Western Australia. Archived from the original on 31 October 2023. Retrieved 31 October 2023.
↑ Casella, Nicolette (24 March 2002). "Rail views are tracked". The Sunday Times. p.28.
↑ MacTiernan, Alannah (25 March 2002). "Rail options excite strong response" (Press release). Government of Western Australia. Archived from the original on 31 October 2023. Retrieved 31 October 2023.
↑ Robb, Trevor (4 April 2002). "Drivers face rail chaos". The West Australian. p.3.
↑ Robb, Trevor (8 April 2002). "Rail plan a traffic sewer: expert". The West Australian. p.4.
↑ Robb, Trevor (19 April 2002). "State revisits railway options". The West Australian. p.31.
1 2 Robb, Trevor (11 June 2002). "Rivals unite on train link". The West Australian. p.4.
↑ MacTiernan, Alannah; Gallop, Geoff (13 August 2002). "Master Plan shows new line a winner" (Press release). Government of Western Australia. Archived from the original on 31 October 2023. Retrieved 31 October 2023.
↑ Robb, Trevor (14 August 2002). "ALP claims win on freeway line". The West Australian. p.4.
↑ MacTiernan, Alannah (5 January 2003). "Drilling tests begin for new railway" (Press release). Government of Western Australia. Archived from the original on 15 June 2024. Retrieved 12 June 2024.
↑ Robb, Trevor (7 January 2003). "Engineers dig up soil fix on city rail tunnel". The West Australian. p.24.
↑ Williams, Ruth (17 October 2003). "Clough warns of rail risks". The West Australian. p.1.
↑ Lam, Minh (3 November 2003). "Clough misses rail tender". The West Australian. p.4.
↑ MacTiernan, Alannah (16 December 2003). "Green light for massive rail project" (Press release). Government of Western Australia. Archived from the original on 15 June 2024. Retrieved 12 June 2024.
↑ Banks, Amanda (17 December 2003). "Mandurah rail costs up by $100m – and may go higher". The West Australian. pp.1, 10.
↑ MacTiernan, Alannah (27 April 2005). "Revised timetable for New MetroRail" (Press release). Government of Western Australia. Archived from the original on 26 October 2023. Retrieved 13 June 2024.
↑ Williams, Ruth (28 April 2005). "Alannah's train derails". The West Australian. p.5.
↑ MacDonald, Kim (20 December 2005). "Tunnel set to delay Mandurah rail start". The West Australian. p.4.
↑ MacDonald, Kim (9 May 2006). "Rail work resumes after dispute". The West Australian. p.6.
↑ Drummond, Mark (3 June 2006). "Leighton sues over rail again". The West Australian. p.4.
↑ Drummond, Mark (14 June 2006). "Leighton files fourth rail writ". The West Australian. p.6.
↑ Drummond, Mark (4 September 2007). "$1.66b rail bill 'may go higher'". The West Australian. p.1.
↑ Drummond, Mark (4 September 2007). "Rail line blowout 'may get bigger'". The West Australian. p.1.
↑ Drummond, Mark (12 September 2007). "D-day for WA's $200m rail fight". The West Australian. p.16.
↑ Gibson, Roy (19 September 2008). "Mandurah train cost rises further – Public Transport Authority says court ruling will see Leighton get $6m in cost overruns, not the $35m it claimed". The West Australian. p.3.
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