UTL is about exploring past, present and future urban technologies in science and fiction, etc...
https://www.delta-optimist.com/local-news/more-land-to-be-removed-from-metro-vancouvers-deas-island-in-delta-12327217
A 10 lane bridge not only would have required less land disruption, but would have been completed years ago. However, a bridge or a new tunnel should have already been built there several decades ago.