Abstract
The paper describes a well considered subsea road tunnel in Åland, Finland which will hopefully start in the very near future. The paper describes partly the socio-economics and public benefits of such a project in Åland and partly some technical aspects of designing and constructing road tunnels under the sea to connect land masses. The tunnel is expected to be constructed along the lines of similar rock tunnels being constructed and entered into successful operation in many of the Scandinavian/Nordic countries. More important though is the vital role such a project will serve for the society in Åland. The project is not one that serves millions of people in busy mega cities – still it is a pleasure to see a mega project for a small community mature, starting from a sketchy plan made by individual enthusiasts to a solid plan for a multi-million Euro investment.
Highlights
The Åland Islands are self-governed and consist of around 6500 islands in its archipelago.Mariehamn is the main centre of activities in Åland hosting the parliament and other vital offices in the islands, whilst the many surrounding islands are basically either agriculture land, fisheries, tourism, and shipping industry or being the home to people who commute to Mariehamn.A subsea tunnel under planning will connect the island of Föglö with the main island where the city Mariehamn is located and allow vehicles to pass around the clock no matter the day in the week.To provide a reliable, cost effective and open at all times link between the island of Föglö located to the East of Mariehamn a subsea road tunnel has been suggested
The project is not one that serves millions of people in busy mega cities – still it is a pleasure to see a mega project for a small community mature, starting from a sketchy plan made by individual enthusiasts to a solid plan for a multi-million Euro investment
Cost effective and open at all times link between the island of Föglö located to the East of Mariehamn a subsea road tunnel has been suggested
Summary
The Åland Islands are self-governed and consist of around 6500 islands in its archipelago. Cost effective and open at all times link between the island of Föglö located to the East of Mariehamn a subsea road tunnel has been suggested. 3. A restructured traffic system The planned tunnel would entirely replace the ferry services on the Föglö Line, making the island of Föglö an extension of the Åland mainland. A restructured traffic system The planned tunnel would entirely replace the ferry services on the Föglö Line, making the island of Föglö an extension of the Åland mainland This allows for restructuring most of the traffic system connecting the eastern archipelago. By eliminating the Föglö Line, and rerouting the Transverse and Southern lines further to the east, up to 7900 running hours and two entire crewed ferries can be saved annually while maintaining the current traffic frequency. Despite the limited number of people who are involved in this infrastructure development in Åland, there is a need today, in 2020 to find solutions which are providing robust and reliable connections for the public
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