CASE STUDY Trackbed Monitoring: NNDR CLIENT: NETWORK RAIL / BALFOUR BEATTY THE CHALLENGE Balfour Beatty on behalf of their client, Norfolk County Council, were contracted to construct £147 million, 20km of dual carriageway called the Norwich Northern Distributor Road (NNDR). This route went very close to Norwich International Airport and joined the Fakenham Road/A1067, north west of Norwich. As part of the carriageway construction a large structure at Rackheath had to span Network Rail’s line regularly carrying passenger and freight trains between Norwich and Cromer. Due to the close proximity of the construction works to the rail, it was deemed necessary to carry out monitoring of the track bed to ensure no deformation was taking place. Based upon seve

Join for free to read