You are hereBlack Heddon
This area was haunted by a bright glowing ghost female ghost. This type of ghost has acquired a name due what it wears and is known as a Silky. She would appear in silken attire and according to An Encyclopaedia of Occultism by Lewis Spence, would be "rattling in her silks". The spirit would terrify travelers foolish enough to venture into the night.
In Ghosts of the North by Jack Hallam he says the Silky haunts the bridge at Black Heddon and that it is known locally as Silky's Bridge. The original hump back bridge has now been replaced though parts of the original one were incorporated into the new bridge. The Silky would be blamed for frightening horses crossing the bridge. Hallam mentions a witch that lived in a shack on the banks of the river that was known as Silky because of her black silk dress and says the bridge was named so after her. The witch and the ghost may be two entirely unrelated stories joined by a common name of theme, or it could be the ghost of the witch haunting the bridge.