It was due to be completed in 1914. They are remarkable for their many technical features as well as for the natural beauties of the districts traversed. Among the viaducts is the fine structure over the Roia, which has five arches, each of 46 ft span; the Lamberta Viaduct, with five arches each of 46 ft span and two of 33 ft; the Bocche Viaduct, with three central arches each of 70 ft span and two of 33 ft; the Allaveni Viaduct, 350 ft long and composed of ten arches; and the Bevera Bridge, having four concrete arches each of 66 ft span.
