Location: Sydney City, NSW
Road widening under the Art Gallery Bridge.
As the work was being carried out within 1m of the carriageway, the carriageway had to be closed and that was only possible between 10.00pm and 5.00am.
The abutment consisted of five columns each 5.3m high by 600mm thick and 1.2 – 1.4m wide and weigh-ing over 10 tonnes. Between each column was a 200mm thick curtain wall weighing over 5 tonnes, resulting in a total weight of almost 73 tonnes of concrete to be removed.