If a good is non-rivalrous in consumption up to a capacity threshold but strictly excludable (such as a private toll bridge without congestion), it is classified as a:

Goods are classified on the basis of two characteristics: rivalry (does one person’s consumption reduce what is available to others?) and excludability (can non-payers be kept out?). • Private good: rival and excludable (a loaf of bread) • Pure public good: non-rival and non-excludable (national defence) • Common resource: rival and non-excludable (an open-access fishery) • Club or toll good: non-rival (until congestion sets in) and excludable (a toll bridge, cable television, a private club) A toll bridge is excludable, because the toll booth keeps non-payers out. It is non-rival so long as it is not congested, because one vehicle crossing does not prevent another from crossing. These are exactly the features of a club good. A merit good is a different type of classification. It refers to a good that the government considers desirable for people to consume, such as education or immunisation, regardless of its rivalry or excludability. Hence the correct option is (C).