Railway viaduct built to replace the existing embankment in the Valley of Chelas, enabling this way the railway quadruplication. The viaduct has a total length of 190m, divided by four inner spans with a length of 34m and two outer spans with a length of 27m. The deck cross section is a prestressed concrete box girder, with inclined webs and constant height. The piers are founded by pile groups. Provided Services: Preliminary Study and Final Design. Owner: REFER, EPE.