NSC 13
Feb 20
limited assembly area, requiring the use of
self-propelled modular transporters, also
provided by Sarens, to move the girders
to the crane. The location of the crane on
the site also brought challenges, with three
pairs of girders placed at the top of an
embankment, which required them to be
transported down a steep slope in order to
place them in position for installation.
To mitigate the issue of the long work
area over the watercourses, including the
span of the river and the dykes, the girders
were installed in two sessions with the
crane positioned on one bank of the river to
install half of the bridge girders, and then
transported to the opposite bank to erect
the remaining girders.
This meant installation engineers only
had to work over the water to join the
central splices to compete the steel erection.
Due to the size of the crane and the
weight of the required lifts, considerable
preparatory works were undertaken,
including piling, to withstand extremely
large ground bearing pressures in close
proximity to the river.
The weight of the lifts was increased
significantly by the addition of the deck
and parapet formwork, which was fitted to
the spliced girders by Galliford Try prior to
erection. However, this minimised further
work at height and provided a safe working
platform for the subsequent casting of the
concrete deck slab.
Installation of the bridge was completed
in December 2019, enabling the County
Council to maintain its timescale for the
opening of the Lincoln Eastern Bypass
project later this year.
Cleveland Bridge Project Manager Dan
Sowerby said: “Delivering this project
with optimum efficiency is testament to
the expertise and collaborative working
employed throughout the process.
“It enabled the project team to
overcome multiple challenges, particularly
from the site location and the autumn/
winter weather conditions, through an
innovative approach to problem solving
and the combined capabilities of the parties
involved.
“The comprehensive working practices
we employed on site, which was endorsed
by Cleveland Bridge winning the 2019
Make UK award for Health, Safety and
Wellbeing, ensured that the project was
completed with no accidents, contributing
to the company achieving more than one
million hours with no reportable RIDDOR
incidents and an Accident Frequency Rate
of zero.”
Bridge
In order to be installed,
bridge girders were
tranported to the crane
by SPMTs
The girders were
delivered to site in 27
pairs
/Design_for_steel_bridge_construction#Specialist_transport
/Connections_in_bridges
/Design_for_steel_bridge_construction#Bridge_erection
/Design_for_steel_bridge_construction#Deck_construction
/Health_and_safety