 In the early 1940s, the acetylene lamp in Fisgard's tower was replaced by a battery-powered electric light.In 1950–51, a causeway was built out to Fisgard Island from the foreshore at Fort Rodd Hill by the Canadian Army; this was intended as a military obstacle, but also provided direct access to Fisgard Lighthouse.A causeway from the adjacent Fort Rodd Hill National Historic Site provides access by land.