What road forms the eastern boundary of the inner northern suburb of the capital city of South Australia?
Fitzroy, South Australia: Fitzroy is an inner northern suburb of Adelaide 4 km from the Adelaide city centre, in the state of South Australia, Australia within the City of Prospect. Fitzroy, South Australia:  It is bounded to the west by Cotton Street, to the south by Fitzroy Terrace, in the east by Prospect Road and the north by Avenue Road. Prospect, South Australia: Prospect is an inner northern suburb of Adelaide, the capital city of South Australia.
Prospect Road