Resurfacing a Road Without Diverting Traffic

Tuesday I drove through Atlanta as the construction season is starting to ramp up, so I am very impressed with this pavement replacement project in Switzerland. They simply erect a bridge over a section of the road so that cars can drive right across while work is going on underneath! The crew carves up the old pavement, repairs and prepares the sub-pavement, lays new asphalt, steamrolls it smooth, and cleans up the mess. Here's another video from the Swiss Federal Roads Office showing how the ASTRA Bridge is erected.



So they close lanes to put the bridge up, but even so, it is a minimal closure compared to the weeks or even months that lanes are closed in the US while miles of highway are repaved at a time. (via Boing Boing)