After 8 years service during the bridge construction, two Linden Comansa
tower cranes had to be taken down. The Cadiz Bay Bridge is one of the major
infrastructures built in Spain in recent years and has been a challenge of
wo Linden Comansa 21LC400 tower cranes have
been working for 8 years in the construction of
the Bridge of the 1812 Constitution, which con-
nects the city of Cadiz with the town of Puerto Real, in
Popularly known as "Bridge of la Pepa", the project
has been an important social and economic benefit for
Cadiz, which until now had only two narrow and out-
dated routes out of the city and for crossing to the other
side of the bay.
With its imposing dimensions, this cable-stayed
bridge dominates the views from anywhere in the bay.
It has a total length of 3,092 metres, and its two main
pylons reach 185 metre high, leaving a main span of 540
metres between them, and holding the deck to a height
of 69 metres above sea level.
Belonging to the machinery fleet of construction
company, Dragados, the two Linden Comansa 21LC400
tower cranes worked from the two huge pylons, one of
them located on the edge of the bay at Puerto Real, and
the other in the middle of the sea.
The team of Eleva Grúas Torre, based in Seville, has
been in charge of the complicated assembly and dis-
mantling of the cranes, as well as of all the maintenance
"The two cranes have reached a maximum
height of 195.6 metres. Strong wind gusts are
very common in the Bay of Cadiz, with much
greater strength at such height, which hampered
a lot all the tasks carried out by our team",
said Tomás Criado, Manager of Eleva Grúas Torre.
Crane Erection Extremely
Erecting the two cranes was quite a chal-
lenge, especially the one situated in the mid-
dle of the bay.
A mobile crane on a pontoon barge helped
to assemble the crane with the minimum
height to install a hydraulic climbing cage:
14.2 metres under hook.
With this configuration, the Eleva Grúas Torre
team could start with the climbing works and
add the remaining ten sections to reach a
free-standing height 69.2 m.
From this initial height, the crane began work
on the construction of the pylon. As the pylon
was gaining in height, the crane was also
Challenging Dismantling Job For
Two Tower Cranes
Contractors World International
Contractors World International Vol 7 No 1