<P> The proceedings were then disrupted when a man "raced across the newly - opened bridge before the Governor's procession" on horseback after announcing the following to the astonished crowd: </P> <P> And I, John Stephen Maley, do hereby declare that I will be the first to cross this Perth Bridge and Causeway! </P> <P> The parade, including the Governor's carriage, then proceeded over the new Causeway after Maley . The Governor's procession continued on steam boats upstream to Guildford where the Governor opened the new Guildford and Helena Bridges . </P> <P> This second Causeway was made up of three bridges with a combined length of 1,600 feet (490 m). Budget constraints encountered during construction meant that the bridges were structurally quite weak . A maximum of 4,480 pounds (2.03 t) or six head of cattle was initially allowed across at a time . </P>

The swan river between the causeway and narrows bridge