One tunnel designer accuses Scotland of falling behind on tunnels while another says they’d never pay for themselves – Who will the Herald quote?
In the Herald today the above. Who accuses? This guy, a ‘top’ tunnel designer. How strong is the case for replacing Scotland’s west coast ferries with tunnels? UK Treasury Green Book-style present-value calculations (with discounting) often make high-upfront tunnel capital look less favourable than ongoing ferry replacement and operating costs, even when undiscounted lifetime cash costs favour tunnels. Recent Shetland analyses illustrate this divergence. https://www.shetlandtimes.co.uk/news/could-much-criticised-treasury-guidance-on-public-spending-d-436409/ Low traffic volumes: On sparsely populated islands, pure financial payback via tolls or conventional CBA is difficult. One tunnelling expert [Martin Knights] publicly stated Shetland-style schemes “would never pay for itself” under standard cost-benefit analysis … Continue reading One tunnel designer accuses Scotland of falling behind on tunnels while another says they’d never pay for themselves – Who will the Herald quote?
