Sydney Harbour Bridge million, which was not paid off in full until 1988. The bridge was formally opened on Saturday, 19 March 1932. Amongst those who attended and gave speeches were the Governor of New South Wales, Sir Philip Game, and the Minister for Public Works, Lawrence Ennis. The Premier of New South Wales, Jack Lang, was to open the bridge by cutting a ribbon at its southern end. However, just as Lang was about to cut the ribbon, a man in military uniform rode up on a horse, slashing the ribbon with his sword and opening the Sydney Harbour Bridge in the
Sydney Harbour Tunnel to Sydney Harbour. A trench was dredged before the arrival of the IMTs and then the IMTs were lowered into the trench by a system of pontoons and control towers. After the IMTs were in place the trenches were backfilled and then a rock armour was placed over the top to protect the units against marine hazards, such as anchors or sinking vessels. The land tunnels were constructed by a combination of driving and cut-and-cover techniques, designed to be strong enough to withstand the impact of earthquakes. The northern end pylons of the Sydney Harbour Bridge were altered to allow