M4 Upgrade to Smart Mortorway junt. 3 to12 UPDATE

Published: 16 April 2019

Please see this link for the bulletin/_UserFiles/Files/M4 J3-12 smart motorway news bulletin April 2019.pdf

The video at https://youtu.be/QQPPjoLffdg is also very good as it explains the project including the bridge rebuilding at Datchet.