Constructing a Bridge

by Eda Kranakis

"If it is true, as Tocqueville suggested, that social and class systems shape technology, research, and knowledge, then the effects should be visible both at the individual level and at the level of technical institutions and local environments. That is the central issue addressed in Constructing a Bridge, a tale of two cultures that investigates how national traditions shape technological communities and their institutions and become embedded in everyday engineering practice. Eda Kranakis first examines these issues in the work of two suspension bridge designers of the early nineteenth century: the American inventor James Finley and the French engineer Claude-Louis-Marie-Henri Navier. Finley—who was oriented toward the needs of rural, frontier communities—designed a bridge that could be easily reproduced and constructed by carpenters and blacksmiths. Navier—whose professional training and career reflected a tradition of monumental architecture and had linked him closely to the Parisia