Port River Expressway, stage 1: bridge over Eastern Parade

The Port River Expressway Project will provide a four-lane road linking the Port of Adelaide with the Salisbury Highway. Stage 1 involves the road works component extending 4.7 kilometres from east of the port to South road. The bridge is a nine span continuous structure, crossing the railway and eastern parade at a 40 degree skew. The western abutment and the first two piers at the western end are unskewed. The superstructure consists of four steel box girders with an in-situ concrete slab. The piers and abutments are of reinforced concrete and are founded on bored piles. The presence of aggressive soils and the possibility of acid sulphate attack has led to additional protective requirements in the components in contact with the existing soil strata identified as the St. Kilda formation. This includes the piles, pile caps and bases of retaining walls. Ground improvement techniques were required on the approaches, including use of stone columns and preloading. (a) For the covering entry of this conference, please see ITRD abstract no. E211602.