 A toll of £0.50 has been levied on vehicles since 2007, but the £0.05 toll that the Act allows for cyclists or pedestrians is not collected.Human toll collectors were replaced by automated machines in 1975.The tolls are used to pay for the upkeep of the bridge, including the strengthening of the chain anchor points, which was done in 1925 and 1939, and regular painting and maintenance, which is carried out from a motorised cradle slung beneath the deck.