Bock, a DP municipal councillor and rapporteur for the capital’s budget, made the suggestion after the delays in long-planned route further to the east.

She proposed the new route because “the City of Luxembourg has had difficulty finding the land” to build the planned pedestrian bridge between Cents and Weimersdorf.

Bock explained her alternative path to Paperjam on 4 December: the walkway would start at the train station, running underground northeast to the Sofitel Le Grand Ducal, run along a new deck on top of the rail bridge that spans the Grund, continue to the Plateau de Rham, potentially link to the National Sport Institute (INS), and end at Three Acorns Park, near Mudam. Conceivably the path could be extended further into Kirchberg with a connecting lift, she said.

“I’m not an engineer,” Bock said in Paperjam, “we obviously still have to test the technical feasibility”. But she argued this track would provide faster access for commuters and reduce traffic on the overcrowded Red Bridge.

In terms of architecture, Bock imagines an elegant and futuristic construction, resembling the “Bird’s Nest” built for the Olympic games in Beijing or the Cloche d’Or water tower.

For now, Bock has just floated the idea. For the proposal to take shape, the infrastructure ministry would have tackle the project.