Tensar’s design of reinforced earth structures and wing walls helped reduce construction costs of a new road bridge over a mainline railway.
Doncaster Metropolitan Borough Council wanted to reduce the cost of a new bridge carrying the Great Yorkshire Way over the East Coast Mainline. It chose vibro stone columns, rather than more expensive piles, to support the bridge’s approach embankments with only the abutments requiring piling. This meant the reinforced earth structures had to be lightweight but have sufficient capacity to support the road above.
The abutment wing walls were built using the TensarTech TW1 modular block retaining wall system, incorporating uniaxial geogrid to reinforce the lightweight fill behind. This economical solution
helped reduced the overall bearing pressure of the reinforced earth structure, while meeting the loading requirements.
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