Construction site in middle of road, concrete column build up, support structure

Construction site in middle of road, concrete column build up, support structure for further overground metro line. BTS railway expansion to the south-east side of the city. Sukhumvit road at Sam Rong Nua area, Mueang Samut Prakan district of Bangkok megalopolis. Road was narrowed to two lanes in each direction because of construction works. View from above, camera located above carriageway and traffic flow.