RMT say a crack near Selby, due to staffing cuts, has crumbled to a much bigger gap.
RMT claim there is massive pressure from the Government to keep the East Coast Mainline running, as they look to re-privatise the service. They say there are also demands on Network Rail from the budget-holder, the Office of Rail Regulation, to cut back on rail renewals work.
More top news
Today's finale to the three-day men's pro event will follow one of the largest amateur sportive cycling events on the British calendar.
White Rose flags and crowds half a dozen deep met the riders as they swept through the towns and villages of North Yorkshire.
Here's Kerrie with your Calendar forecast for the rest of the holiday weekend