Continuous Concrete Bridges & Continuous Hollow Girder Bridges

Continuous Concrete Bridges and Continuous Hollow Girder Bridges, published by the Portland Cement Association in the 1960s, presents a technically precise and historically valuable overview of mid-twentieth-century advances in reinforced-concrete bridge engineering. Produced during a period of rapid innovation in highway and civil infrastructure design, these two companion booklets document the principles, calculations, and structural behaviours that defined contemporary bridge construction. Each volume offers engineers and scholars a window into the evolving methodologies of the era, detailing analytical approaches rooted in elasticity theory, moment redistribution, and improved understanding of concrete performance under varying loads and spans.

The set provides clear explanations of continuous-span systems and the structural efficiencies achieved through monolithic forms, while also exploring the specialized characteristics of hollow-girder configurations. Diagrams, tables, and worked examples illustrate design assumptions and loading conditions, enabling readers to follow the progression from conceptual framework to practical application. For historians of engineering, the booklets represent the Portland Cement Association’s role in standardizing and disseminating best practices across American infrastructure projects during a formative period for reinforced-concrete technology.

Together, Continuous Concrete Bridges and Continuous Hollow Girder Bridges remain essential reference works for collectors, engineers, and researchers interested in the development of modern bridge design. Their concise yet authoritative treatment of continuous-concrete systems makes them valuable both as technical documents and as artifacts reflecting the engineering priorities of the 1960s. This set is particularly desirable for those studying structural evolution, mid-century civil-engineering pedagogy, or the historical publications of the Portland Cement Association.