Shetland's islands could be linked by undersea tunnels within eight years, following a decision by Shetland Council to explore funding options for the project. Councillors gave their backing to a draft blueprint that would replace aging ferries with a tunnel network connecting the mainland Shetland to Yell, and then to Unst. The plan also includes two additional tunnels to Whalsay and Bressay, with the total infrastructure project estimated at £1.5 billion.
Cost-Effectiveness and Feasibility
The council determined that building subsea tunnels would be more cost-effective in the long run than maintaining and replacing the current ferry service. A feasibility study indicated no technical barriers to construction. The existing ferry service, described as the "social and economic backbone" of the archipelago, operates with 12 vessels and costs approximately £23 million annually. The council acknowledges that ferries may not be entirely phased out but emphasizes the tunnels' long-term financial advantages.
Potential Economic and Social Benefits
Council leader Emma Macdonald stated that fixed links to islands often lead to repopulation, economic growth, and a reduction in the average age of residents. The proposed tunnels are expected to generate economic benefits for the region, particularly for the SaxaVord spaceport on Unst and the aquaculture industry.
Funding and Timeline
Under the council's timeline, the underwater routes could be operational by 2034. Macdonald expressed optimism that with support from the Scottish and UK governments, tunnels could be a reality in as little as eight years. Potential funding sources include private investment, public subsidy, and road tolls. The council will report back in September with findings on potential external funding and a draft implementation roadmap. The council also voted to continue investing in ferry services to other islands, stressing the need for both ferries and tunnels to fully realize Shetland's potential, with both the Scottish and UK governments having a vested interest in the project's success.
International Precedent
Undersea tunnels have been successfully implemented in the Faroe Islands, which are connected by a network of underground tunnels, including an underground roundabout. This provides a precedent for the feasibility and potential success of similar infrastructure in the Shetland Islands.