A proposal for a 14-mile underground dual carriageway connecting Manchester and Sheffield has been put forward as a way to tackle chronic traffic congestion on trans-Pennine routes. The idea reflects long-standing frustration with journeys across the Pennines, where existing roads such as the Woodhead and Snake passes are often slow, congested and vulnerable to poor weather, and forms part of wider ambitions to improve connectivity between the north's major cities.

The scheme would see traffic routed beneath the Peak District in a tunnel rather than over the existing surface roads, aiming to cut journey times and reduce the bottlenecks that currently affect drivers travelling between the two cities. As with previous trans-Pennine tunnel concepts explored by transport bodies, such a project would represent a major and costly piece of infrastructure, though full details on funding, timescale and delivery were not available in the source material.