This early map extends from the city of Sydney west to Leichhardt, showing the location of the proposed first Pyrmont Bridge, as well as the proposed route from the City to Parramatta Road "(roughly the route of the current Pyrmont Bridge Road) including a proposed viaduct at Black Wattle Swamp (the current site of Wentworth Park), with an offshoot route (probably about Ross Street) to Balmain Road in Leichhardt. By the 1850s, the population of the Pyrmont area had grown, and residents demanded better access to the area, so in 1853 the Pyrmont Bridge Company was incorporated to build the bridge and associated roads. The Bridge was opened on 17 March 1857, and carried an unpopular toll until 1884, when the bridge was sold to the government for £52,500. Tolls ranged from 9d. for a gig drawn by two horses to 1/4d. for a sheep, pig or goat. The bridge was a wooden pile structure with an iron centre "swing panel" to allow ships to pass. It was replaced in 1902 with a new steel bridge, as exists today" (Brown).

Other points of interest include the location of Grose Farm, now site of Sydney University, and the polluting White Bay Abattoirs.

Edward Moriarty (1825-1896) was born in Ireland and emigrated to New South Wales in 1848. In 1852 he opened his own private engineering practice in Sydney, and worked on many major projects thereafter.