Often by traveling we take them for granted, if not for drying while we are listening to the radio or streaming music, yet in reality the Road and railway galleries They are decidedly complex engineering works. There are all types, from the small galleries that “buccano” mountains to real giants capable of connecting different states passing under waterlike the tunnel of the sleeve, or even connecting Two different continentslike the Eurasia tunnel. Some are intended for “rubber” transit, while many others are instead reserved for the railways. And the latter in particular tend to be the most complex structures, often reaching extensions, depths and also particularly high development costs. Below, the review of record galleries.
