In this view, it is clear to see the difference

between the viaduct that had been the subject of an extensive refurbishment and the one that has not! 66605 crosses Sharnbrook's 'slow' viaduct with the 05.25 Tunstead to West Thurrock tanker train. The slow line has become a double track again here as Sharnbrook Junction, where it singled, is just beyond the other end of the viaduct.