Almonte Viaduct
The Almonte River Arch Viaduct over the Alcántara
Reservoir in Spain is part of the Madrid-Portuguese
Border High Speed Rail link. The viaduct whose length
is almost 1km is within a 6.1km section of the line is
all the centre-piece of this unique project.
The viaduct is formed by three distinct areas: two
sequences of approaching spans from both banks, and
the main span. The 384m deck-arch main span gives
support, by means of spandrel columns, to the upper
deck, which has continuous multi-supported
prestressed box-girder scheme all along the viaduct.
The deck is a double-cantilevered prestressed
concrete box girder with a constant depth of 3.10m
and a depth of 14m.
Tagus Viaduct
The viaduct over the Tagus River in the Alcántara
Reservoir is also part of the High Speed Rail Link
between Madrid and the Portuguese border. The bridge has a total length of 1,488m and has a
324m long arch. The deck spans over the arch are
54m long.
The two approach viaducts are composed of 60m long
spans except the spans adjacent to the arch, which
are 57m long. The arch is formed by a box section variable both in
width and height. The deck is a prestressed concrete
box girder with a maximum depth of 4.00m.
Read about design and construction of both bridges, enjoy drawings, photo and video galleries in our
magazine e-mosty December 2016:
3/2017