Bridges

Great advances have been made in modular expansion joint technology since this most versatile type of joint was invented forty years ago, and the use of such joints, especially on very large bridges, has increased steadily. As a consequence, national standards have been written and continually developed to keep up with this technology, in order to ensure that the great potential of this type of joint is fully realised. Key contributions towards the development of these standards have been made by the engineering communities of Australia, America and Europe in particular, governing the design, manufacture and testing of the joints. Commentary on these contributions is presented, with reference in particular to the testing requirements of various national standards.