Daily bus service is provided from Waterbury to and from Bradley International Airport in Windsor Locks and the New York City airports. Several interstate bus lines and passenger trains travel into Waterbury. Connecticut Transportation Company has daily buses to and from New Haven, leaving from Waterbury's Green. Interstate I-84 East (the Yankee Expressway) connects Waterbury with Hartford and northern New England; I-84 West travels into New York and Pennsylvania. Major north-south routes include Connecticut Route 8, which connects with the Connecticut Turn-pike (I-95).
Like streets in many New England towns, Waterbury's streets were planned around a central city green. Commuters experience heavy traffic on the freeways, especially during rush hours. City buses provide service in the city, running every 15 to 30 minutes with destinations including residential areas, hospitals, and downtown, as well as surrounding towns. Bonanza Bus Lines provides service to New York, Danbury, and Hartford. The Metro-North train takes commuters to New York City and all major points on the East Coast. A trolley, available for group hire, is operated by the Waterbury Convention and Visitors Commission. The Greater Waterbury Transit District provides wheelchair accessible mini-bus service.