 In 1894, the section of road continuing north-west of Milligan Street was known as Douro Street, although the name Douro Street for this section of road appears on maps as early as 1855.It is unclear, however, as to when this road extension was actually made, as maps from 1860 still show Lake Irwin with Douro Street and surrounding lots superimposed over it, suggesting the lake was yet to be drained and Douro Street was yet to be constructed.A considerable number of historical photographs are available of the street during its history.