Barhale were awarded this £1.1 million contract to replace a pedestrian footbridge. The project saw the replacement of a dilapidated non-functioning timber swing bridge across the River Weaver with a 28 tonne steel bridge, incorporating a rotating 32.5 metre section. The bridge is restricted to pedestrian and cycle traffic only and was manufactured by BCS, Barhale’s in house fabrication workshop in Walsall.
Due to the extremely restricted access to the site, the only means of bringing in plant, equipment, materials and the bridge components was down the river on pontoons. The bridge sections were delivered to the wharf at Hartford Bridge (1.5 miles upstream of the site), lifted by crane onto the pontoon and moved down river by a tug, before arriving at the site and being lifted into position.
To introduce cost saving efficiencies within their own organisation, Network Rail engaged Barhale through the NR route team, as part of the Kent Route Project DIME, rather than using the traditional NR Infrastructure Projects route. This was the first time that this project management route had been implemented.
The scope of the project was to construct a new steel footbridge within Charing Station to replace a life expired Exmouth type structure; the scope included its demolition/ removal following the successful installation of the new bridge.
Design and build project from GRIP stage 3 to 8 and involved gaining planning approval for the repositioning of the new bridge from the district council. Barhale working closely with our designers Tony Gee & Partners, the design we developed incorporated BCS fabrication’s extensive experience of fabricating steel footbridges.
The new bridge was scheduled to be installed and the existing concrete structure dismantled during a 57 hour OROR possession 21st to 22nd September 2013. This date was successfully met.
Canterbury WWTW serves a population of 73,394 and has four digester tanks, each with a capacity of 1500m3 sludge, at approx.12.8m dia. x 11.9m. As part of Southern Water’s AMP6 upgrade works, Barhale were contracted to fully refurbish and upgrade two of these digesters.
The works included purging the digesters out of service; draining down and cleaning the digesters; carrying out necessary surveys and ensuing repairs; replacing the old gas mixing system with a new chopper pump system and all associated pipe-work; installing new temperature probes; testing & commissioning and conducting a 28 days reliability test.
The works took place in an extremely challenging working environment that presented some of the highest risks within the industry.
As part of Southern Water’s AMP6 upgrade works, Barhale were
contracted to refurbish the aeration system at Canterbury Waste
Water Treatment Works (WWTW). The works included replacing 7
aeration blowers dating from 1998 with 75kW rotary lobe blowers
which are complementary to new diffusers and the air main. Barhale
also installed new blower and aeration control and instrumentation
systems. These included high and low discharge pressure sensors and
pressure transducer with a visual display or pressure gauge.
The works entailed significant constraints. For example, the blowers
needed to be replaced without stopping the process of the WWTW
and the full works had to stay within consents agreed with the
Environment Agency by Southern Water.