The first Ordnance Survey map of 1860 shows a farm track crossing the viaduct as part of a byway from West Gatehead farm to Cockhill farm and the Craig estate. The new wooden viaduct of 1846 carries the railway. The new bridge required embankments to give sufficient height over the river, whereas the first viaduct was sprung from higher river embankments. On the Troon side the site of the old track has been obliterated by Fairlie Colliery (Pit No.3) and its spoil heaps.