It's one of the North's most scenic roads, connecting two of its largest cities. But landslips on the Snake Pass are becoming so frequent that council bosses have warned they cannot afford to keep repairing the road.
And that's led to warnings the route could be closed to traffic indefinitely. Not too far away there is a precedent for this type of thing.
There were once three main roads joining Manchester and Sheffield. For now at least Snake Pass and Woodhead Pass are still in use.
But up until 1979 drivers could also take the more southerly A625. Built in 1819, it took traffic from Sheffield via Castleton to Chapel-en-le-Frith where it connected with the A6 into Stockport and onto Manchester.
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