Bridge in Grimsby completed in 1928 Wearmouth Bridge completed in 1929 Tsoelike Suspension Bridge in Lesotho completed in 1930 Forth Road Bridge completed in 1964 Deptford Railroad Bridge completed in 1964 Severn Bridge completed in 1966 The second Craigellachie Bridge completed in 1970 The Humber Bridge completed in 1981 Cranes Titan Clydebank, completed in 1907 Titan Crane, Fairfield, completed in 1911 250-ton crane, HMNB Portsmouth, dated 1912, demolished 1984 Titan Crane, James Watt Dock Crane, completed in 1917 Titan Crane, Barclay Curle, completed in 1920 Blocksetter Travelling Titan (South African Harbours and Railways); for use at Durban, completed prior to 1932 Blocksetter Travelling Hercules (South African Harbours and Railways); for use at Table Bay, completed prior to 1932 Blocksetter Travelling Hercules; for use at Ceuta, completed prior to 1932 Gantry crane, Turbine Hall, Bankside Power Station, dated 1940s. Still visible in static display within the Tate Modern. Titanic The company was contracted by Harland and Wolff Shipyard, Belfast, to construct a large gantry (known as the Arrol Gantry) for the construction of three new super-liners, one of which was called the RMS Titanic. Like the ships themselves, the gantry crane was one of the largest built at the time, comparing with transporter bridges in length, height and capability. Hikitia The company also built the crane for the Hikitia in 1926, which is thought to be the last fully operational self-propelled steam crane in the world. Demise of the business The company was acquired by Clarke Chapman in 1969 and the Dalmarnock Works were closed in 1986. References External links Sir William Arrol & Co. in the Structurae database British companies established in 1873 British companies disestablished in 1969 Companies based in Glasgow Construction and civil engineering companies of Scotland 1873 establishments in Scotland 1969 disestablishments in Scotland Defunct companies of Scotland Construction and civil engineering companies established in 1873 Bridgeton–Calton–Dalmarnock Defunct construction and civil engineering companies Construction and civil engineering companies disestablished in the 20th century