Ponte della Costituzione instance of arch bridge
Planning
In June 1999, the Municipality of Venice drafted a preliminary plan for a fourth bridge over the Grand Canal.  Using a public selection process, they commissioned Santiago Calatrava in November 1999 to design the new bridge.  Calatrava's response was an arched bridge with a large radius which was designed to be constructed off-site and installed entirely from the canal.
The bridge is situated at a strategic point, connecting the railway station (Stazione Santa Lucia), on the north with the Piazzale Roma (the City's arrival point by car/bus), on the south side of the Grand Canal. The bridge is important both functionally and symbolically, connecting arriving visitors to the city and welcoming them to Venice with a panoramic view of the Grand Canal.Design
Calatrava designed an arched truss bridge with a radius of 180 metres (590 ft), with a central arch, two side arches and two lower arches.  Girders placed perpendicular to the arches join them together.  The girders consist of steel tubes and plates, which form closed section boxes. The stairway on the bridge is paved with pietra d'Istria, a stone traditionally used in Venice, alternating with tempered glass steps illuminated from below by fluorescent lights. The parapet is also tempered glass, terminating in a bronze handrail with concealed lighting. The contractor which had the task of constructing the footbridge was Cignoni. Design and installation studies were carried out by a specialized group: professors Renato Vitaliani (Padua University) and Francesco Colleselli (Brescia University) for geotechnical and foundation aspects, the company Mastropasqua-Zanchin & Associates Structural Engineering for the steel arch and weldings verification, Fagioli Group and Giorgio Romaro (Padua University) for the installation activities. 
The internal structure can be appreciated by looking at a cross-section of the bridge exhibited outside at the waterfront, located between the Railway Directorate Headquarters and the Santa Lucia railway station. After fabrication, the bridge was moved into place by a large barge in July 2007.
type of example of manifestation of representation of