A spline to create a single-track viaduct on brick arches, to be used with 'DDD HL2 2T ...' scenic objects. This version has no attached track and is for those wishing to use invisible stations and their own choice of track .The spline should be raised to suit the height of the scenic objects before they are attached (maximum 12 metres above base although the arches extend 12 metres lower so that the viaduct can span rivers).