The Pont Amont
The first on the long list of bridges inParis, as one goes downstream, is called the upstream bridge (Amont) . It takes the boulevard périphérique over the Seine, to the East of the city. With the downstream bridge (pont Aval) it is the largest bridge in Parisand carries the heaviest traffic. It has never been given an official name.
It consists of two mechanically independent prestressed concrete bridges with four spans of 58.5m - 90m - 65m and 56.5m. Each bridge has a pavement which is 15.70m wide that carries one-directional traffic.
The abutments are supported by two cast-in place piles, excavated to a depth of 7m, and the piers are constructed on blocks measuring 3.80 x 4.50m, excavated to a depth of 2.50m
Designers: DEPAQUIT, ROUSSELIN, DAMBRE and HERZOG
Construction date: 1967 - 1969
Total length: 270 m
Effective width: 42 m: carriageway 17.50 m; two 2m footpaths; a 3m central reservation.
Constructional features: bridge with 4 spans of 58.5m - 90m - 65m and 56.5m constructed using successive cantilever construction and prefabricated deck sections.