Police on Tuesday closed the inbound side of Luang Phaeng Road in Lat Krabang district, where a section of elevated road under construction collapsed on Monday evening killing two people and injuring 12 others.
A concrete span about 100 metres long fell from a height of 20 metres onto Luang Phaeng Road between the Luang Phaeng branch of Lotus and Jorakay Noi police station.
Officials said it would take 3-4 days to clear away the debris – shattered concrete, reinforcing bars and steel supports.
It was initially thought that the giant steel crane that lifted the concrete segment toppled over and the huge span fell onto traffic below. The investigation was continuing.
The incident happened about 6pm on Monday. Two people were killed, an engineer and a construction worker.
Twelve people were injured, many vehicles were crushed, a building was damaged and several power poles were toppled.
The fallen span is part of an elevated road costing 1.6 billion baht being built between Onnut and Lat Krabang under contract to the Bangkok Metropolitan Administration.