Police are advising motorists to expect delays on Sunday, 22nd January due to a slow moving abnormal load travelling from Lisahally, Londonderry to Toome.
Disruption and delays are expected along the route, which includes the Glenshane, between 5am and 12pm.
Closure of the dual carriageway between Toome and Castledawson will be necessary to facilitate the journey and this will be in effect from 10am.
Police are advising motorists to avoid the area and seek an alternative route where possible.