early International modern style architecture. The 1930s saw another building boom like that of the early 20th century, which was itself cut short by the outbreak of the Second World War On 9 February 1934, Hobart was again visited by bad bushfires. The day was called 'Black Friday' and several homes were destroyed. Although many livestock were killed, there were no human fatalities. On 23 January 1937, the first road to the summit of Mount Wellington was completed having taken 30 months to build, and named the 'Pinnacle Road'. It had cost £26,000 and allowed easy access from the Springs, which soon became a tourism and day-trip destination, to the Summit, which although subject to volatile weather changes, has views over Hobart and the Derwent River estuary. Late 20th century Although post-war Hobart was a thriving small city with a growing population and good combination of industry and primary agriculture, the city was largely confined to the western banks of the Derwent River. The first plans for a bridge across the Derwent River had been made in 1832, but the width and depth of the river, combined with the powerful currents, proved to be too much of a deterrent for then current construction materials and techniques. A solution was hit upon to create a pontoon bridge, and in 1943, the Hobart Bridge was opened, spanning the Derwent River for the first time. To deal with the perceived problem of upriver shipping access, a lifting span was added near the western landing that allowed quite large vessels to pass through. The Hobart Bridge had created the desired expansion of residential development on the eastern shore of the river, but by the mid-1950s, the population of the eastern shore, as it soon became commonly known, was so great that massive traffic congestion problems plagued the bridge. Stormy weather also created severe hazards on the water level roadway, with large waves sometimes sweeping over the roofs of vehicles. By the late 1950s, it was realised a larger capacity bridge was needed. Construction on the much larger concrete arch Tasman Bridge began in May 1960, and was completed on 18 August 1964 at a total cost of £7 million. The bridge was originally four lanes, and expanded access to the eastern shore dramatically. The 1950s brought an increased sense of mobility amongst Australians, both socially and geographically. Tourism was on the increase in Tasmania,