Roads partially reopen at Bangkok tunnel leak site

PUBLISHED : 19 Jul 2026 at 11:51 The inbound lanes of Prajadhipok Road reopened to traffic on Sunday morning. The outbound lanes remain closed (Photo: Mass Rapid Transit Authority) Roads were partially reopened to traffic near Bangkok's Wongwian Yai on Sunday as repairs continued underground to the leaking Purple Line rail tunnel in Klong San district, which earlier caused a subsidence.The Mass Rapid Transit Authority, which owns the line, said three lanes reopened on the inbound side of Prajadhipok Road from Wongwian Yai to Ban Khaek intersection at 6am on Sunday. Outbound traffic remained closed. Motorists can use Lat Ya Road instead. Prajadhipok Road has been closed since the subsidence was first detected when water started to leak into the Purple Line tunnel, which is still under construction, two weeks ago. The MRTA said the contractor of the Purple Line extension was continuing to grout the tunnel to stop the leak, which was 37 metres underground. Engineers monitoring the scene said there was no sign of any movement of buildings within a 30-metre radius of the leak site. There had also been no further subsidence along Prajadhipok Road.