840902.fig.001a
(a)
840902.fig.001b
(b)
840902.fig.001c
(c)
840902.fig.001d
(d)
Figure 1: Longitudinal section of (a) existing bridge, (b) demolition of gravel-grate walls and elimination of road superstructure, (c) realization of a new deck, and (d) realization of new gravel-grate walls and a system of external prestressing.