Photos by Graeme Phillips - http://www.flickr.com/photos/66289212@N07/8522131000/
http://www.flickr.com/photos/66289212@N07/8521931968/
Diversion is in place until tomorrow -
http://www.eastcoast.co.uk/
"Engineering work between Darlington and Newcastle from 13:30 on Saturday 2 until 12:30 on Sunday 3 March 2013"
"An hourly diverted train service will run between York and Newcastle, not calling at Darlington and Durham"
There's also some travel information for trains by other operators.