Bridges

The construction of a new bridge in a high density urban environment has numerous constraints which can influence and often dictate the method of construction and hence the design of the structure. Early identification of these constraints ensures an integrated design and construction procedure whereby the constraints are recognised and planned for throughout the project. Through a collaborative approach between the designer and the constructor, the significant use of precast concrete ensured that the Coronation Drive Viaduct was constructed ahead of program, under budget and in harmony with the numerous project constraints. The objectives of this paper are to use the Coronation Drive Viaduct as a case study to highlight the constraints that are encountered in an urban environment and the implication these constraints have on design and construction. Furthermore, the advantages the use of precast concrete provided to overcoming these constraints and ensuring the delivery of a successful project are discussed.