The current 2016 proposed rail link involves building a new tunnel under the
Brisbane River and the
Brisbane central business district, creating five new inner city station precincts, and increasing the core capacity of the rail network. The alignment will extend from
Dutton Park, through four new underground stations at
Boggo Road (adjacent to the
Boggo Road busway station),
Woolloongabba,
Albert Street and
Roma Street, towards upgraded stations at
Exhibition and
Bowen Hills. A new line through the city centre was needed because of the centralised nature of the existing inner-city network of stations. If any inner-city services were interrupted it led to
traffic bottlenecks that rippled across city-wide services. Platforms will be 220m long to accommodate future nine-car trains, though the tunnel will initially run six-car trains. In December 2019, work commenced on the demolition of the
Brisbane Transit Centre. With an estimated capital cost of $5.4 billion it is expected to be the largest transport project ever built in Queensland. In addition, the project's detailed business case identifies the project will result in costs of $4.9 billion for additional services and complementary growth projects, and $4.4 billion for operation and maintenance costs over a 30-year period. On 13 June 2017, the Queensland Government allocated $2.8 billion to start building the rail link. The remaining $2.6 billion of capital costs and other project costs is proposed to be allocated in future budgets. Infrastructure Australia has observed that early project designs formed the basis of the project cost estimates and are prone to design maturity risks. The
Labor Government has stated the project will provide more than 1,500 jobs each year during construction, and boost the Queensland economy by $70 million. The
New Generation Rollingstock fleet will operate in the tunnels. The Queensland Government has also initiated a process of building a new fleet of 65
Electric Multiple Units (not to be confused with the
EMU class trains that were retired by Queensland Rail in 2025) capable of operating on the new corridor, with the government committing $600 million to the first 20 trains in 2020. In 2021, three manufacturers were shortlisted for the project and the Queensland Government committed $7.1 billion to build all 65 trains, with construction to take place at a purpose-built facility in
Maryborough. The design of the trains, and the eventual service plan for Cross River Rail, have not been detailed by the government.
Delivery The project is being delivered through public-private partnerships and contracts, and is arranged into three major infrastructure packages. The first is the Tunnel, Stations and Development public-private partnership to deliver the main underground and tunnelling works, the Rail, Integration and Systems alliance to deliver the rail system upgrades, and the European Train Control System contract to deliver the new signalling system. These contracts were awarded in 2019.
Sectorisation Cross River Rail will add an additional sector to the rail network, replacing the current main and suburban sectors. Exact operations of the network are yet to be publicly revealed, however in 2022 SEQ Rail Connect was published by the Department of Transport and Main Roads. The document serves as a high level conceptual plan for integrating tunnel operations into the existing network with an emphasis on high service levels and network reliability. Sectorisation was chosen over grade separation to reduce construction and maintenance costs while allowing for high frequencies. The sectorised network will also reduce the propagation of service perturbation, ensuring any delays are contained within a single sector. According to SEQ Rail Connect the three sectors will consist of the following line pairs:
Sector 1 Sector 1 will operate north-south via the rebuilt Exhibition station and the Cross River Rail tunnel. Northern Lines include the Sunshine Coast line, Caboolture line and the Redcliffe Peninsula line. Southern Lines include the Gold Coast line and Beenleigh line.
Sector 2 Sector 2 will operate east-west via the existing inner-city core network. Eastern Lines are the Shorncliffe line, Airport line and Doomben line. Western Lines include the Ipswich and Rosewood line and Springfield Central line.
Sector 3 Sector 3 will operate east-west via the existing inner-city core network and the Merivale bridge incorporating the Ferny Grove and Cleveland lines. Exact line pairings and operations have not been publicly revealed by the State Government. ==Stations==