Work No. 42B—U.K.A road forming the westbound carriageway of the M2, being in part a new road and in part improvement and realignment of the existing westbound carriageway, commencing by a junction with Work No. 37B at its termination, passing over Work No. 43A, under Works Nos. 43C, 43E and 45 and under Maidstone Road, then passing to Junction 4 (Work No. 44) and terminating at a point 190 metres east of the said bridge over the M2, including a bridge over Harp Farm Road;