As the townsite developed in the early to mid 1860’s, roads were layed out based on Col. Moody’s plan. In some places, such as Columbia Street and Carnarvon Street substantial bridges were built to cross fairly wide and deep ravines. The ravines are not apparent on maps until the first Goad’s Fire Atlas, published in 1897. This map shows the presence of several ravines. A particularly large, deep ravine running south from Clarkson between Fourth Street and Church Street, across Victoria. The “Lofty Wooden Bridge” (as noted on the map) crosses the ravine along Carnarvon Street. A note on the map shows the ravine to be 30 feet deep.
The Department of Works in the 1900 city Annual Report describes a tunnel under Lytton Square, which was installed to drain a ravine in the government reserve.