The Den Chai – Chiang Rai – Chiang Khong Railway is a proposed new railway in Northern Thailand. The railway would branch off from the current Bangkok-Chiang Mai Railway at Den Chai, towards Chiang Rai, and then Chiang Khong on the Thailand-Laos border.
This rail was originally proposed in 1960 but nothing came of it. The proposal was revived again in 2010, with numerous reports and announcements of impending construction dates made throughout the 2010s. The latest report says that the government will award construction contracts in 2021.
The line will be double-tracked, though it isn’t specified if it’s metre-gauge (like the current (Bangkok-Chiang Mai line) or standard-gauge (like railways in Laos and China, and possibly future Chiang Mai HSR).
There are published reports that show the line connecting with a new line in Laos that would travel to the Laos-China border in Boten. There is no plan for this at the moment, but if the railway starts construction I would expect an announcement of such a railway.
Other reports show a branch line to Wiang and the Golden Triangle area.
I would usually make a map, but this one has already been made in Google Maps. This map shows the spur line to Wiang.
[Map of Denchai-ChiangRai-Railway.]
[Map via Skyscrapercity.]
Another map showing an alternative branch line going to Mae Sai, which would provide a connection through Myanmar.
[Map by Gall Zeidler Consultants.]
Links And Resources
Northern Double-track Railway (Den Chai – Chiang Rai – Chiang Khong) – News and discussion (mostly in Thai).
Track Doubling Project, Den Chai – Chiang Rai – Chiang Khong C1 (Den Chai-Ngao Section)
Tunnel excavation begins on Den Chai-Chiang Rai tracks – [06/03/23]
“The State Railway of Thailand has started excavating the 6.2-kilometre tunnel which will connect Den Chai in Phrae with Chiang Rai’s Chiang Khong district, which lies on the banks of the Mekong River.”
“Construction 🏗️ site of Chiang Rai railway station has become the new tourist attraction- hope to become a reality in 2028.” – [12/12/22]
State Railway of Thailand backs bids for rail projects – [18/12/21]
“According to SRT Governor NirutManeephan, the approved bids include a 26.5 billion baht contract awarded to the ITD-NWR Consortium to build the 104km Den Chai-Ngao section, a 26.9-billion-baht contract to CKST-DC Consortium to build the 135km Ngao-Chiang Rai section, and a 19.3-billion-baht contract, also awarded to CKST-DC, for the 84km Chiang Rai-Chiang Khong section.”
Complaints hit northern rail projects – [10/07/21]
“Bidding for the two double-track railway projects worth 128 billion baht in the North and Northeast could be marred by alleged irregularities, a seminar was told.”
Rail chief defends bidding process – [15/06/21]
“At the centre of the controversy are the 323-kilometre northern section from Den Chai to Chiang Rai-Chiang Kong and the 355-km northeastern section between Mukdahan and Nakhon Phanom.”
SRT set to call bids for B128bn rail ventures – [20/03/21]
“Construction of the Den Chai-Chiang Rai route is divided into three contracts: the 103km Den Chai-Ngao section (26.5 billion baht), the 132km Ngao-Chiang Rai section (26.9 billion baht) and the 87km section from Chiang Rai to Chiang Khong (19.4 billion baht).”
2 new rail projects on track – [06/01/21]
“The Den Chai-Chiang Rai-Chiang Khong route will be 313 kilometres in length and cost 72 billion baht.
The project will start from Den Chai station in Phrae province and run to Chiang Khong station in Chiang Rai province.”
Den Chai – Chiang Rai – Chiang Khong new double-track railway – [12/12/20]
“The Cabinet on 8 December 2020 approved a draft Royal Decree, designating land expropriation boundaries in certain areas for implementing the new double-track railway between Den Chai, Chiang Rai, and Chiang Khong in northern Thailand.”
Cabinet nod sought for 2 new rail routes worth B153bn – [03/08/20]
“The routes are Den Chai-Chiang Rai-Chiang Khong in the upper North and the Ban Phai-Mukdahan-Nakhon Phanom in the upper Northeast.”
SRT unveils ambitious plans for expansion and boosting revenue – [03/07/20]
“The Den Chai-Chiang Rai-Chiang Khong route is in the process of being proposed to the Cabinet before inviting bids, which will be divided into three contracts. After a review, SRT has found that three contracts are appropriate.”
2 SRT routes up for bids this year – [03/07/20]
“The Den Chai-Chiang Rai-Chiang Khong route project will be resubmitted to the cabinet for confirmation on whether construction and service operations will still be broken into three contracts”.
Northern rail link set for 2023 – [10/08/18]
“An ambitious double-track northern rail route project from Den Chai in Phrae to Chiang Khong in Chiang Rai is set for completion in 2023, two years ahead of schedule….it has faced many delays, including the need to conduct a new study in 2004 on how it will connect with China’s initiative to expand rail networks southward.
Once completed, the new route will link up to a railroad in Laos which will run to Kunming, a transportation hub in China’s southern Yunnan province.”
Northern double-track railway to Mekong to open 2023 – [09/08/18]
“The ministry had asked the State Railway of Thailand (SRT) to speed up construction of the much-awaited line so that it could open in 2023, ahead of the originally scheduled 2025, he said.”
Dual-Track Railway Project in the North Wins Cabinet Approval – [03/08/18]
“The dual-track railway project on the Den Chai – Chiang Rai – Chiang Khong route was proposed by the Ministry of Transport. It aims to expand the railway network in the Upper North and connect with Lao PDR, Myanmar, and southern China. Construction is expected to begin in 2019.”
SRT pushes double-track rail proposals – [10/06/18]
“The State Railways of Thailand (SRT) is expected in the next few weeks to table before the Cabinet a plan to build the Denchai-Chiang Rai-Chiang Kong double-track rail line worth Bt76 billion, according to SRT acting director Worawut Mala.”
OTP unveils 20-year master rail plan – [23/09/17]
“Considering the development of metre-gauge rail lines, the urgent plan covers Den Chai-Chiang Khong and Ban Phai-Nakhon Phanom, he said.”
Progress of T.A.R. in Thailand – [13/14 June 2017]
5th Meeting of the Working Group on the Trans-Asian Railway Network
13 – 14 June, 2017 Busan, Republic of Korea.
Prime Minister announces construction of railway from Phrae to Chiang Khong – [29/11/16]
“The Prime Minister said the State Railway of Thailand (SRT) would soon begin the construction of a 323-kilometer railway from Denchai district of Phrae to Chiang Khong district of Chiang Rai after it was shelved 56 years ago.”
Thailand: Improvement of Railway Passenger Services [PDF] – [April 2014]
184.108.40.206 New Lines
(i) Den Chai – Chiang Rai – Chiang Khong.
State Railway of Thailand confident cabinet will approve double-rail tracks linking Phrae and Chiang Rai – [10/07/13]
“The State Railway of Thailand (SRT) is confident the cabinet will approve construction of the 325-kilometre line, which has been shelved for 53 years. The long-delayed project to build double-rail tracks linking Phrae and Chiang Rai provinces.”
B2tn rail project ‘will transform Thailand’ – [26/03/13]
“SRT Governor Prapas Chongsa-nguan explained that the plan envisages double track linking Chiang Khong district of northernmost Chiang Rai province to Thailand’s southernmost town of Padang Besar, and the northeastern province of Nong Khai, bordering Laos.”
Connecting Greater Mekong Subregion Railways: A Strategic Framework [PDF] – [August 2010]
This report from the Asian Development Bank show alternative routes that would connect China and Southeast Asia. Route 4 (Bangkok–Kunming (via Chiang Rai–Boten–Mohan)–Nanning and Ha Noi–Ho Chi Minh City) shows the proposed Chiang Rai railway would be extended through Laos to connect with the railway network in China.
The SRT hopes a rail link to Chiang Rai is back on track – [06/07/10]
“A map at the State Railway of Thailand head office shows the present route network and future lines including a link to Chiang Rai.
The track to Chiang Rai, joining the main northern route at Den Chai station in Phrae, has been slated for building since 1960.
Half a century and 17 prime ministers later, no work has been conducted. The only progress is a preliminary feasibility study carried out in 1997.
Now the SRT believes there might be a chance the project will actually go ahead, as the government is showing a keen interest.”
Please revise the map to be in line with the official Google Map on this line here: