ABG Deckdrain Heysham to M6 link road bridge abutment drainage
Location Heysham to M6 Link Road
Start date 04/05/2016
Project requirement The Heysham to M6 Link Road is one of Lancashire's top priority transport projects. The new road completes the long awaited connection from the Heysham and Morecambe peninsula to Junction 34 of the M6. It is a 4.8km dual carriageway with a footpath and cycleway along the entire route. The new road will provide improved access for residents, businesses and tourists to the Heysham and Morecambe area. It will open up areas for regeneration and reduce congestion currently experienced within the City of Lancaster. The road alignment was carefully planned and adjusted to minimise earthworks and structure costs. The road crosses the River Lune near the M6, along with numerous roads, a rail line and built up areas resulting in many concrete structures each requiring back of wall drainage. Many of these structures have shaped wing walls, creating a challenge for earthworks contractors to place drainage materials against the wall and compact backfill without damaging the specified painted bituminous waterproof layer. Traditionally rough concrete drainage blocks are used. These heavy items have to be transported from the concrete works, across site to a remote bridge site. Pallets of blocks then have to be lifted over wing walls and each individual block stacked against the waterproof layer without damage. The remaining blocks then hamper the backfill operation. An approved, cost effective alternative was needed which speeded and improved operation but could also demonstrate the required 120year design life.
Services supplied Lancashire County Council approved the use of ABG Deckdrain 1200S/S170 as a superior alternative to the drainage blocks (>10x flow) with particular added benefits. Deckdrain is delivered in rolls on one vehicle from the factory at a rate equivalent to 100 trucks of drainage blocks. A single roll (>50sqm) can be handled easily by two people and safely attached to the structure ahead of the backfill operation leaving space for proper compaction. The Deckdrain protects the waterproofing and even provides an additional waterproof surface.
Outcomes ABG made timed deliveries with target quantities to different locations along the project.
The County Council approved the Deckdrain which also has BBA Approval for use in Highways applications.