The A64 Whitwell dual carriageway trunk road suffers from sub-standard horizontal and vertical geometry, leading to increased maintenance such as grass cutting being required each year, some years more than others depending on weather patterns.
With designing for maintenance principles in mind, we developed a permeable verge hardening solution which removed the grass and topsoil from visibility splays and replaced this with T1000 terram geotextile and 150mm of planing material. This was applied to 12 locations in the central reserve and nearside verges. This permeable solution meant no expensive additional work to the existing drainage, which would have been required had a more conventional impermeable surface solution been adopted. The benefits of this solution are threefold:
So all in all, a simple, low cost effective construction solution that reduces long term risk, and is easily repeatable at other locations.
Entry submitted by A-one+ Integrated Highways Services
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