Tags: Railway Line.
The Line 4 is a new underground rapid transit line under construction in Milan Italy part of the Milan Metro system. The line was planned to be completed in 2015 as part of the works for the upcoming Milan Expo. However delays in planning financing and construction works will probably force to postpone the complete opening and only the first part of the line is now expected to open by 2015.The line when complete will be 15 km (9.3 mi) long with 21 stations.
