High speed diesel trains from Leicester will be going the long way round to London on Sundays this winter.
It will be a chance for rail enthusiasts to travel over Harringworth viaduct in Northamptonshire.
But it will also provide time for Railtrack to undertake extensive engineering work south of Leicester.
The aim will be to prepare for next summer when the service along the main line virtually doubles. Four trains an hour will be able to travel in each direction at a faster speed.
”The route over Harringworth viaduct is renowned for its scenery,• said Alan Wilson, head of planning and performance for Midland Mainline.
Harringworth viaduct, which is five miles from Corby, was built in 1878, has 82 arches and contains 20 million bricks.
Midland Mainline trains travel over it every Sunday from 27 September until 21 March.
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