A4 Milano-Venezia Motorway / 3dr lane between the new bridge over the Tagliamento river and Gonars

The project involves the enlargement to the A4 motorway to 3 lanes between the new bridge over the Tagliamento River (km 63 +300) and Gonars (km 89 +000).

The main structures include:

• a new bridge over the Tagliamento River consisting of two adjacent viaducts, each ac- commodating a roadway. The roadways are placed at the net distance of 13.454 m with respective lengths of 1,522.88 m (west) and 1,517.22 m (east). The structure is comprised of 20 spans with 19 piers for each roadway.
• a continuous deck bridge over the Stella and Comor Rivers with a mixed steel-concrete section consisting of five steel beams of dif- fering heights. The first bridge has a total length of 110 m and the second of 90 m.
• the San Giorgio di Nogaro Junction overpass with a steel and concrete section characterised by the presence of only two principal double-T bearing beams, placed at a distance of 11.5 m, with double-T connection beams.