Lighting has probably been removed as part of the upgrade works happening to this road.It certainly looks that way. There is an interesting document on the Highways Agency website with regards to the huge scheme now in progress. Following the construction of the "new" A556 which will effectively bypass the existing route, the old highway will be "de-trunked" and dropped down to single lane status. As part of this work, the lighting on the southern and northern links would not be reinstated. The lighting at junctions and the residential portion between Bucklow Hill and Mere would be retained, although this will probably be under the auspices of the local authority in future.
On a separate section, the document discusses the issue of site waste management. The amount of metal scrap destined for recycling from the de-trunking operation ie railings, lighting columns, signs and the like, was estimated to be in the order of 50 tonnes!
With the large quantity of ZX lanterns with their plastic canopies also to get rid of, the amount of waste to be disposed of really mounts up. When you consider the number of PFI schemes happening around the country and the amount of redundant equipment to be dealt with, the disposal / recycling of it all becomes a real issue - and an expensive one too.