Concrete Pixels

The project during construction

It’s such a nice and fulfilling experience to be involved in landmark project like the Bangna Expressway in Thailand dubbed as the world’s longest & widest viaduct ever built. This 6-lane 27 meter wide elevated bridge 18 m above an existing highway spans a total length of about 55 km completed in a record time of 53 months by employing a state of the art bridge construction technique known as segmental technology developed by Sir Jean Muller, a French Engineer. The superstructure where I was mostly involved with consist of a single cell box girder composed of precast segments with a height of 2.6 m. It is externally post-tensioned between the elegant H-type piers spaced at 44 m. The precast yard where close to 40,000 segments are  produced sits on a 65 hectare land and produces about 1600 cu.m a day from 2 batching plants and a rebar installation of about 300 tons a day with more than 2000 manpower in two shifts.

Nightview of the completed viaduct