The MP has raised the issue with Calderdale Council, she said: “I am fully supportive of this cycle route plan, and I will offer any support I can.”
Built in the 1880s, the Queensbury Tunnel provided a link between Queensbury and Bradford, but has been closed since the 1960s.
An online petition was launched by the Queensbury Community Heritage Partnership, a group worried that repairs to the tunnel will see it permantly blocked to cyclists and horseriders.
National charity Sustrans have been the lead organisation in the development of the Great Northern Railway Trail and is backing the campaign and has seen successes with a similiar project in Bath and Earlsheaton near Dewsbury.
If successful, the tunnel will be one one of the longest underground cycle paths in Europe and will provide a clear cycle route for commuters between Halifax and Bradford.