Right Tunneling Public Company Limited, or RT, a leader in comprehensive tunnel engineering and geotechnics, is making history once again with the successful breakthrough of two significant national projects worth a total of 3.657 billion baht. This achievement reflects the company's national expertise and potential as a Tunneling Specialist.

1. Water Conveyance Tunnel along Mahasawat Canal (Contract G-TN-9A)
Utilizing a Tunnel Boring Machine (TBM) with a diameter of 4.84 meters over a total distance of 2,396 meters, valued at 1.337 billion baht, this project is being executed for Metropolitan Waterworks Authority. The breakthrough was successfully achieved on October 8, 2025, with current progress at 74%, and the project is on track for delivery in May 2026.

2. Dual-Track Railway Tunnel from Den Chai to Chiang Rai to Chiang Khong (Contract 2, Ngao to Chiang Rai Section)
Constructed using the Drill & Blast method, with a diameter of 7.40 meters over a total distance of 5,400 meters, valued at 2.081 billion baht, this project is under the contract of State Railway of Thailand and executed by CKST-DC2 Joint Venture. The tunnel breakthrough was successfully achieved on October 10, 2025, with current progress at 72%, and it is expected to be delivered by April 2026, over a year ahead of schedule.

Mr. Chawalit Tanomthin, CEO of RT, stated:

“This success not only reflects our engineering capabilities but also serves as evidence of our professional risk management and construction quality control. RT will expedite project delivery as planned while enhancing operational efficiency to foster sustainable growth.”

RT remains committed to maintaining safety standards, precision, and national-level tunneling innovations to drive Thailand's infrastructure towards a stable future.