After a feasibility study was carried out , it was discovered that only one bridge would have to be demolished to allow the running to continental loading gauge .
During 1974 , it was realised that the use of foreign stock and engines could answer the NVR 's aspirations .
After a feasibility study was carried out , NVR was discovered that only one bridge would have to be demolished to allow the running to continental loading gauge .
During 1974 , it was realised that the use of foreign stock and engines could answer the NVR 's aspirations .