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Reducing High-Speed Rail Costs by Combined Double-Single Tracks
Figure 3. Restricted areas imposed by environmental and other type of constraints.
Figure 4. Final proposal for the Santander-Bilbao line after considerations of required constraints.
The final layout has been modelled in Autocad Civil 3D, meeting the Spanish technical
requirements for high-speed railway tracks. The final result consists of a total length of 90.9
km whose 68.18 km are brand new. Due to the complex terrain and the stringent geometrical
requirements of this type of lines, the layout includes 28.3% of the total length in tunnel and
13% in viaduct (see Figure 5 and Figure 6).
International Congress on High-speed Rail: Technologies and Long Term Impacts - Ciudad Real (Spain) - 25th anniversary Madrid-Sevilla corridor 285
