Daniel Biau



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Daniel Biau, international consultant, civil engineer and author of The Bridge and the City: A Universal Love Story, will share insights on urbanization and bridges.

Across countries and centuries, the session will explore a fundamental social and demographic change: the emergence of a planet of towns and cities. But it will look at this densification of human and economic relations through a specific lens, the increased connectivity triggered by strategic urban bridges.

As places of encounters and exchanges, bridges have played a major role in the urbanization of our planet. With reference to twenty-four world cities, the presentation will explain how these monuments have influenced urban development over all continents. The most fascinating cities in Europe (Paris, Rome, Istanbul, Saint-Petersburg, London) all possess fantastic bridges. The same could be said about North American cities (New York, San Francisco, Portland, Chicago) and cities in other regions of the world. Besides, the most famous bridges have almost always been erected at a critical juncture in the history of their host cities. It could be argued that “the bridge makes the city” because, in history, the city reaches a new dimension when its “grand” bridge is inaugurated.

Bridges can be seen as founding milestones, buttonholes and laces of the urban fabric, as well as signatures of the built environment. As architectural objects and engineering feats, they directly reflect the technical achievements and aesthetical values of their time, as well as the socio-cultural and economic context of their construction. The lecture will illustrate a universal relationship, over space and time, from Rome and its Ponte Sant’Angelo (134) and Paris and its Pont-Neuf (1607) to New York and its Brooklyn Bridge (1883) and Shanghai and its Nanpu Da Qiao (1991). It will also draw lessons from that history for contemporary urban planning.

Biographical Information

Born in France, Daniel Biau graduated from Ecole Nationale des Ponts et Chaussées in Paris as a Civil Engineer specialized in urban planning. He also holds a PhD in Sociology from Sorbonne University. Daniel Biau has been Deputy Executive Director and Director of the Regional and Technical Cooperation Division of UN-Habitat, the City Agency of the United Nations, between 1994 and 2011. In this capacity he has provided advice on housing and urban development policy to more than 60 countries in all regions of the world and published many articles on urban issues (see He is now an independent consultant, based in Nairobi and Paris, and has recently published “The Bridge and the City”, a richly illustrated book on the world’s most successful and attractive cities.


Bridges -- History


Transportation | Urban Studies

Persistent Identifier

The Bridge and the City



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