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M4 J18 to J19 Central Reserve Barrier Replacement
M4 J18 to J19 Central Reserve Barrier Replacement
The Project
The main purpose of barriers in the central reservation of motorways is to retain vehicles on the carriageway and reduce the risk of collision with vehicles on the opposite carriageway.
The existing metal central reserve barrier at this location had reached the end of its life and work took place to replace it with a new concrete barrier. The high containment concrete barrier also improves safety by reducing the likelihood of a vehicle crossover. It is virtually maintenance free and has twice the life span of a traditional metal barrier.
Construction commenced in January 2010 and despite poor weather and heavy snow during the early stage of the project, works were completed the week ending 13 March 2010, one week ahead of the target completion date.
Between January and March 2010, a combination of narrow lanes and contraflow with a 50mph speed restriction was used for safety while works took place in the central reservation. The traffic management was removed over the weekend of 13 & 14 March 2010.
