CIVILS BROCHURE

CASE STUDY
Alcántara Dam, Spain
Tilting of Bridge Arches
OVERVIEW: ALE was appointed to assist
with the construction of a viaduct on
La Plata highway over the Tajo River.
SERVICES REQUIRED: The viaduct consists
of two main sections with a total length
of nearly 400m, which are supported on
concrete pillars rising from the banks of the
river and from steel arches in the centre.
ALE’s responsibilities included pushing
the bridge sections into place, skidding the
steel arches over the bridge and lowering
them into position, tilting and closing the
semi arches, skidding the semi-decks from
both abutments and replacing.
TRANSPORT OF
BRIDGE SECTIONS
WITH SPMT
CASE STUDY
Arch installation of
Rego de Lamas
Viaduct, Spain
OVERVIEW: ALE has completed the arch
installation of the Rego de Lamas Viaduct
in Orense, Spain.
SERVICES REQUIRED: ALE were
commissioned to perform the installation
of the arch section of the Rego de Lamas
Viaduct in Orense, Spain. The arch
section measured 80m and weighed
approximately 1,100t.
ALE built the section on a platform over
the right bank of the AP-53 highway, which
runs towards Orense and created a slope
similar to the AP-53 highway.
For the project, ALE utilised SPMT trailers
and a supporting steel structure to
stabilise the bridge section. The load was
then lifted and unloaded over the supports
before being transported to the assembly
area.
Trailers and 300t climbing jacks were
used for the lowering until the structure
was finally jacked down and repositioned.
The project was a huge success with
the crossing manoeuvre only taking two
hours to complete.
Together, we are Smarter, Safer, Stronger
37