<Table> <Tr> <Th_colspan="2"> Sydney Harbour Bridge </Th> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th> Coordinates </Th> <Td> 33 ° 51 ′ 08" S 151 ° 12 ′ 38" E ﻿ / ﻿ 33.85222 ° S 151.21056 ° E ﻿ / - 33.85222; 151.21056 Coordinates: 33 ° 51 ′ 08" S 151 ° 12 ′ 38" E ﻿ / ﻿ 33.85222 ° S 151.21056 ° E ﻿ / - 33.85222; 151.21056 </Td> </Tr> <Tr> <Th> Carries </Th> <Td> <Ul> <Li> Bradfield Highway </Li> <Li> North Shore railway line </Li> <Li> 1 pedestrian way </Li> <Li> 1 cycleway </Li> </Ul> </Td> </Tr> <Tr> <Th> Crosses </Th> <Td> Port Jackson (Sydney Harbour) </Td> </Tr> <Tr> <Th> Locale </Th> <Td> Sydney, Australia (Map) </Td> </Tr> <Tr> <Th> Official name </Th> <Td> Sydney Harbour Bridge </Td> </Tr> <Tr> <Th> Owner </Th> <Td> Government of New South Wales </Td> </Tr> <Tr> <Th> Maintained by </Th> <Td> Roads and Maritime Services </Td> </Tr> <Tr> <Th> Heritage status </Th> <Td> Historic listed place </Td> </Tr> <Tr> <Th> Australian Heritage Database </Th> <Td> 105888 </Td> </Tr> <Tr> <Th> Preceded by </Th> <Td> Gladesville Bridge </Td> </Tr> <Tr> <Th_colspan="2"> Characteristics </Th> </Tr> <Tr> <Th> Design </Th> <Td> Through arch bridge </Td> </Tr> <Tr> <Th> Total length </Th> <Td> 1,149 m (3,770 ft) </Td> </Tr> <Tr> <Th> Width </Th> <Td> 48.8 m (160 ft) </Td> </Tr> <Tr> <Th> Height </Th> <Td> 134 m (440 ft) </Td> </Tr> <Tr> <Th> Longest span </Th> <Td> 503 m (1,650 ft) </Td> </Tr> <Tr> <Th> No. of spans </Th> <Td> </Td> </Tr> <Tr> <Th> Clearance below </Th> <Td> 49 m (161 ft) at mid-span </Td> </Tr> <Tr> <Th> No. of lanes </Th> <Td> 8 </Td> </Tr> <Tr> <Th_colspan="2"> Rail characteristics </Th> </Tr> <Tr> <Th> No. of tracks </Th> <Td> </Td> </Tr> <Tr> <Th> Track gauge </Th> <Td> 1,435 mm (4 ft 8 ⁄ in) standard gauge </Td> </Tr> <Tr> <Th> Electrified </Th> <Td> 1500 V DC overhead </Td> </Tr> <Tr> <Th_colspan="2"> History </Th> </Tr> <Tr> <Th> Constructed by </Th> <Td> Dorman Long & Co </Td> </Tr> <Tr> <Th> Construction start </Th> <Td> 28 July 1923 (1923 - 07 - 28) </Td> </Tr> <Tr> <Th> Construction end </Th> <Td> 19 January 1932 (1932 - 01 - 19) </Td> </Tr> <Tr> <Th> Inaugurated </Th> <Td> 19 March 1932 (1932 - 03 - 19) </Td> </Tr> <Tr> <Th> Opened </Th> <Td> 19 March 1932 (1932 - 03 - 19) </Td> </Tr> <Tr> <Th_colspan="2"> Statistics </Th> </Tr> <Tr> <Th> Toll </Th> <Td> Time of day tolling (southbound only) </Td> </Tr> <Tr> <Td_colspan="2"> Sydney Harbour Bridge Location in Sydney </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Sydney Harbour Bridge </Th> </Tr>

When did they finish building the sydney harbour bridge