WORLD NEWS
Last exit: the mobile crane’s route out of the site was made impossible due to
the demolition work. The LTM 1450-8.1 easily hoists the smaller crane off the old
motorway bridge.
of Hesse, was responsible for all the
hoisting equipment for dismantling the
structure and sent its new LTM 1450-8.1
mobile crane to hoist the smaller mobile
crane off the abutment.
A Liebherr crane hoisted a smaller
partner out of a bridge construction site.
The smaller five-axle crane, tipping the
scale at around 60 tonnes, was attached
to the outriggers of the Liebherr LTM
1450-8.1 mobile crane and lowered
safely from a semi-demolished bridge
into the valley.
For years, the Heidingsfeld viaduct
on the A3 motorway to the south of
Würzburg has been one of the largest
construction and traffic-jam sites on the
German motorway network.
The new viaduct is part of an
infrastructure that extends for a total
of around 100 kilometres, the objective
of which is to widen the A3 between
Aschaffenburg and Würzburg into
a six-lane motorway. The work was
started in 2012 and is scheduled to be
completed by 2021.
As a result of the advanced
demolition work involved, however,
there was no longer a route for the
five-axle mobile crane to be driven off
the site, and in a spectacular procedure,
the Liebherr LTM 1450-8.1 mobile crane
hoisted its smaller partner, an LTM 1250-
5.1, out of the remainder of the bridge.
Würzburg crane contractor Gebr.
Markewitsch GmbH positioned
the Liebherr mobile crane on the
old motorway bridge to move the
construction machinery, material, and
containers off the bridge, most of which
had already been dismantled, into the
valley. Crane and transport contractor
Weiland, from Lampertheim in the State
Liebherr crane to the rescue
Attached — the 250-tonne crane is prepared for the hoist and the attachment
equipment is secured to the crane outriggers.
10
APRIL 2019
Using a combination of three adjustable
yokes, the five-axle crane, which tips
the scale at around 60 tonnes, was
attached to the outriggers and lowered
safely from the semi-demolished bridge
into the valley — a height of around 20
metres. The Weiland crane in its orange
and white livery had 134 tonnes of
ballast to counteract the load of 64.5
tonnes at a radius of 18 metres.
Junior director at Weiland Kran
und Transport GmbH, Sebastian
Degenhardt, took the opportunity
presented by the extraordinary crane
job to visit the site near Würzburg. In
addition to the 85-metre telescopic
boom, the main features of the new,
modern, and extremely flexible mobile
crane are its innovative VarioBallast and
VarioBase, according to Degenhardt,
who is responsible for engineering and
sales at Weiland. For example, on this
job on the viaduct, it was only possible
to position the mobile crane so close
to the bridge structure because the
reduced ballast radius made it possible
to have a very small radius of the boom
without a load.
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