Planning process As early as the 1950s there were plans for a tunnel under the inner city for railbound vehicles, then for trams. The plans were abandoned because of the cost, due to the high water table and ground conditions, which were unsuitable for tunnelling. The city has to finance tramways, while the government finances railways. The planning process has taken a long time, being included in preliminary city plans in the mid 90s under the project name "Centrumtunneln". A feasibility study was conducted in 2001–2002 by Banverket in cooperation with Västra Götalandsregionen, Västtrafik, Göteborgsregionen, and the city of Gothenburg. Similar rail tunnel projects have already been implemented
in Malmö and in
Stockholm. Västlänken is not part of the Trafikverket Future plan (swe: Framtidsplan) 2004–2015, nor the alternative plan. Construction could start earlier since the
Västra Götaland Regional Council is willing to invest money in the project.
Routes Banverket investigated three routes for Västlänken, including new stations along the routes in the city centre. The route alternatives were named after the proposed new stations: Haga–Korsvägen, Haga–Chalmers, and Korsvägen. In addition to these underground alternatives, an expansion of the current rail network to the south, with a larger terminus station, was also investigated, named Förstärkningsalternativet (). On 19 December 2007, Banverket chose the Haga-Korsvägen alternative as it best fulfilled the goals for the expansion. A majority of other governmental bodies to which the proposed routes were referred for consideration also agreed on that opinion. == Construction ==