When the line closed it was carrying just 80 passengers a day . Local lore said that the line was being kept open in case the Cabinet needed to be evacuated to the nuclear bunker at Doddinghurst . At the time of its closure , it was carrying a mere 80 passengers a day ; local lore had it that the line was being kept open in case the Cabinet needed to be evacuated to the nuclear bunker at Doddinghurst .