Subway Expansion News 2000-2004

PR on Purple Line - translated and summarized from Manager Daily, December 1, 2004
Minister Suriya and MRTA have come up with a PR effort on the Purple Line Project (Bangsue - Bang Yai - 23 km) at Bangsue Station so as to tell the public whose houses are along the purple line about the upcoming project and the effect during the construction and after the opening of the system.
Commentary: There has been heavy criticism of the Purple line, such as the desire to have a terminal at Mochit 2 instead of Bangsue as well as the wishful thinking that the line be totally underground. The media have been guilty of giving the public the impression that the Subway will always be underground.
Furthermore, some even are upset that the new line does not reach their houses at Bangbuathong - Sai Noy. However, these people are justifiably fed up with the poor minibus services run by Chalong Riawraeng (Nonthaburi MP) and Colonel Dr Aphiwan Wiriyachai (TRT MP of Nonthaburi - 4th district - covering Bang Buathong). Even the extension of BMTA Bus No 134 to from Bang Buathong to Sai Noy was rejected for political reasons.

The plan for the Rama 6 Expressway and the Red Line Commuter - 2700 must be removed - translated and summarized from Dailynews, November 24, 2004 and Manager Daily, November 24, 2004
OTP told 370 people who are going to be affected by the Rama 6 Expressway and Red Line Commuter details of the project.
1) A new 6-lane Rama 6 Expressway from Chimplee Interchange to Srirat Expressway with 7 interchanges
2) Electrified and double-tracked Red Line Commuter from Bangsue to Talingchan - at grade from Bangsue to Bang Bumru and Bang Son to Bangsue while elevated across the Chaophraya
3) Two-lane local roads with 3 at-grade u-turns and 4 u-turn bridges in Thonburi and 5 at-grade U-turns in Bangkok
The daily number of cars by 2021 will be 104,500 per day while there will be 156,000 daily passengers for the Red Line commuter [Bangsue - Talingchan section].
The electrified double tracking of the Red Line commuter has a price tag of 13.7 billion baht.
The Rama 6 expressway - 22.4 billion baht
Local roads - 0.47 billion baht
Land Expropriation - 4.9 billion baht covering 2700 houses at the toll gates and the interchanges.
The compensation for using SRT land - 3.4 billion baht
Local road will be done by BMA while ETA is handing the Rama 6 Expressway and SRT is handling the Red Line commuter.
Land expropriation will start in July 2005.
The EIRR for the project is about 12% for Red lien commuter alone, 13% for Expressway alone while the combination of Red line commuter and Rama 6 Expressway has EIRR of 15.4% and the Extension form Taling Chan to Nakhon Pathom will has EIRR of 17.1% but with a price tag of 35.2 billion baht
For the case of FIRR, the expressway ALONE will be 6.1% with 21.2 year payback while 100% private venture will have FIRR of 7% with 19.7 year payback. The public-private joint venture will result in 8.36% FIRR and payback period of 18.7 years... with the following price tags:Construction: 1.389 billion baht
land Expropriation 8.7104 billion baht
Private investment 4.6817 billion baht
Loan of 9.2034 billion baht
Total 24.1471 billion baht
If the Red Line commuter is to be extended to Nakhon Pathom, SRT needs 38.904 billion baht -> public funds for construction and signal installation of 27.904 billion baht while the private concession holder will have to invest 10.399 billion baht.
Communities to be evicted to make way for the Red Line Commuter and Pink Airport Link - translated and summarized from Than Setthakij, November 18-20, 2004 and Than Setthakij, November 21-24, 2004
Red Line Commuter
1) Lak Hok Community -> near Muang Ek Village and Rangsit University
2) Ban Phak Roat Fai -> the residential area for SRT railway workers and officers where many poor people also live since many of those railway workers are so poor that it is very hard to distinguish them from slum dwellers.
3) Tuek Daeng -> those who live around the Red Building in Bangsue Junction and the area near Prem Prachakorn canal
4) Talad Noy -> Chinese people in Thailand Noy-Chiang Kong shrine have lived in that area for more than 100 years and many Thai billionaires have lived and started their business in Talad Noy
5) Klongsan - Lad Ya -> area of poor people on the Thonburi side of Bangkok
6) Wongwian Yai
7) Talad Ploo
8) Chom Thong
Pink Airport Link
1) Paed Reiw Railway Communities
2) Communities around Yommaraj - Chitladda Triangle
3) Community behind Decha Hospital
4) Ban Phak Roat Fai (same as above)
5) Tuek Daeng (same as above)
6) Klong Som Poy - near Rama 6 Bridge
7) Suan Phak - Talingchan

List of 25 Stations for Pink Line Commuter - translated and summarized from Than Setthakij, November 21-24, 2004
1) Talingchan
2) Bang Bumru
3) Charansanitwongse (should be Rama 7)
4) Bang Son (revived Bangson station - closed after the opening of Rama 7 Bridge)
5) Prachachuen (former Bangson Stop)
6) Mochit 2 (replacement of Phaholyothin terminal and Km 11 Stop - connected with Northern Bus terminal - interchange with Red line commuter)
7) Phaholyothin Center (New Bangsue Junction - interchange with Airport Link Transit, Blue Line)
8) Pradiphat (upgraded from Pradiphat stop)
9) Samsen (interchange with Red Line Commuter)
10) Ramathbodee (should be Tuekchai or Chitladda - interchange with Airport Link Transit, interchange with Orange Line)
11) Yommaraj (interchange with Airport Link Transit)
12) Phyathai - Interchange with BTS [Starting Point of Airport Link Transit (1st leg)]
13) Raj Prarrob (Airport transit)
14) Makkasan (Old Makkasan Station - no construction for the time being)
15) Makkasan center (terminal of Airport Express)
16) Phetburi (Near the road to Soi Nana Nuea - no construction for the time being)
17) Soi Soon Wijai (near RCA - no construction for the time being)
18) Klong Tan (no construction for the time being)
19) Ramkhamhaeng (upgraded Sukhumvit 71 stop due to better road access - Airport Transit)
20) Seri (Near Kasem Bundit U. - no construction for the time being)
21) Hua Mark (Airport Transit)
22) Krungthep Kreetha (near Unico Golf Course - no construction for the time being)
23) Ban Thup Chang (the interchange between Kanchanaphisek Outer Ring Road and Motorway - Airport Transit)
24) Lad Krabang (Airport Transit)
25) Suvannabhum

The list of 35 stations for Red Line commuter - translated and summarized from Than Setthakij, November 18-20, 2004

1) Rangsit
2) Muang Ek (former Lak Hok)
3) Donmuang
4) Karn Kheha Km 19
5) Laksi
6) North Park (replacement of Thung Song Hong stop)
7) Ngam Wongwan (replacement of Bang Khen station with connection to Kasetsart University)
8) Prachaniwet (in front of Wat Samina Naree)
9) Mochit 2 (replacement of Phaholyothin terminal and Km 11 Stop - connected with Northern Bus terminal - interchange with Pink Airport link)
10) Phaholyothin Center (New Bangsue Junction - interchange with Airport Link Transit, Blue Line)
11) Pradiphat (upgraded from Pradiphat stop)
12) Samsen (interchange with Airport Link Transit)
13) Ramathbodee (should be Tuekchai or Chitladda - interchange with Airport Link Transit, interchange with Orange Line)
14) Yommaraj (interchange with Airport Link Transit)
15) Mahanak -> near Mahanak canal and Nopphawongse Police station - interchange with BTS
16) Hua Lamphong (interchange with Blue line Subway)
17) Talad Noy
18) Klong Sarn
19) Wong Wian Yai
20) Talad Ploo
21) Tha Phra (the replacement of Klong Tonsai station)
22) Taksin Center -> interchange with BTS
23) Wat Sai
24) Wat Singh
25) Bang Bon
26) Karn Khehai [Bang Bon]
27) Rang Sakae
28) Rang Pho
29) Sam Yaek
30) Phrom Daen -> BKK City Limit
31) Thung Seethong
32) Bang Nam Jued
33) Mahachai Muang Mai - replacement of Khok Kwai station
34) Ban Khom
35) Mahachai

Complete details of 2 new subway lines and 2 new extensions - Thaipost, November 11, 2004 and Prachachart Thurakij, November 15, 2004

Purple Line station list - July 13, 2004
Wisarut comments: The list of 14 elevated stations for the purple line from Siamturakij and my own analysis on the integrated mass transit system form MRTA and I got the list of 8 stations along Suvanabhum Airport Link from Manager Daily.
The list of 3 underground section and 1 elevated Interchange from Bang Pho to Samsen of the purple line, the 6 stations on the Ring section, 2 new station for the new version of orange line are derived my own analysis on the route.
List of 14 elevated stations for the Purple Line
1) Bang Yai Terminal station - needs a park and ride
2) Bang Phraek AKA Thunyatharn Village
3) Bang Buathong Bang Buathong Intersection - needs a park and ride
4) Bang Rak Yai AKA Wongchai Nakhorn Village
5) Ratchapruek Intersection - needs a park and ride
6) Rattanathobet Rattanathibet Road - AKA Tha It
7) Wat Sai Mah - opposite to Sanambin Nam
8) Phra Nanaklao near Sanambin Nam Intersection - going to have a park and ride
9) Sri Pornsawan - a shortcut to downtown Nonthaburi near Jusco Rattanathibet which has been purchased by Central Pattana
10) Kae Rai intersection near New Nonthaburi Provincial Hall, Tesco Lotus, and Shinnawatra Satellite Station
11) Rewadee in front of Soi Rewadee - a short cut to Nonthaburi Pier and Bang Kwang prison
12) Nakhon In - the 1st station outside Bangkok near Tiwanon - should have a via duct to Big C Nonthaburi
13) Wongsawang near Big C Wongsawang and Wongsawang Intersection - good for KMITNB students
14) Tao Poon market
List of 3 underground stations (plus 1 elevated interchange)
0) Bang Pho Interchange Station - need to construct an intermediate station between Bangsue and Taopoon if space allows. Otherwise, Bangsue Station must be converted into an interchange station.
1) P8 Thaharn - Thaharn Road near RTA Ordinance Department - RTA Military area
2) P9 Bang Krabue (AKA Phichai) Interchange between Phichai Road and Umnuay Songgram Road
3) P10 Sang Hee Sang Hee Intersection - AKA Samsen -> Samsen Road
List of 2 new stations for Orange line (Bang Bumru - Bang Kapi)
1) O1 Bang Bumru Bang Bumru Railway Station
2) O2 Sirinthorn the beginning of Sirinthorn Road - Interchange with Blue Ring
List of stations of Blue Ring section
1) B1 Bang Kruay - (AKA Rama 7) near EGAT HQ - a few meters from the Southern railway tracks, still within Bangkok area - needs a giant bridge to go across Chao Phraya
2) B2 Bang Or
3) B3 Bang Plut - Pang Plut district - near Premier Thaksin's Palace
4) B4 Phra Pinklao - Pha Pinklao Intersection - near the van pool to Mahidol University (Salaya campus)
5) B5 Bangkok Noy (AKA Charan Sanitwongse) near Charan Sanitwongse 35, Sam Yaek fai Chai, and Phrannok Road
6) Tha Phra Interchange station
List of 8 stations for Suvannabhum Airport Link
1) Phyathai upgrade from Phyathai Stop - needs to be long enough to reach Sri Ayutthaya Intersection as well as Uruphongse intersection (Rama 6 Road).
2) Ratprarob - The access to Pratoonam and Mahanakhorn Gypsum Building upgraded from Ratprarob Stop - may be long enough to reach the western edge of Makkasan Station.
3) Makkasan - New Makkasan station must be long enough to reach Phetburi subway station. SRT is going to allocate 40 rai of land for Airport City Terminal - the starting point of Airport Express.
4) Klongtan - Klongtan Station - needs a via duct to link with RCA and businesses buildings along New Phetburi road (e.g. Italthai Building, Charn Issara 2 Building)
5) Hua Mark near Jusco Sri Nakharin
6) Thin Chang - Thub Chang Station - needs a park and ride for Kanchanaphisek Road, 2nd stage Expressway and Bangkok-Chonburi Motorway... but needs to negotiate for the land to local Muslim Bangkokians.
7) Lad Krabang - Ladkrabang Station - needs a park and ride for those who want to go to downtown Bangkok and feeder bus and van to pick up those who live the area of Minburi province (Minburi - Nongchok - Lad Krabang district) as well as those workers in Lad Krabang Industrial Estate, KMITL students and Japanese-graduated professors from KMITL.
8) Suvannabhum underground terminal station at the main terminal.

MRTA planning for 91-km expansion of subway - translated and summarized from Thairath, April 5, 2004 and Than Setthakij, April 4-7, 2004
After receiving the task to implement 91-km of MRTA mass transit systems, MRTA said there will be two phase of this expansion project:
1) 68.9 km - Phase 1 -> The one which could be started immediately since this section has already passed Environmental Assessment (EA) and has preliminary design blueprints in the hands of MRTA.
1.1) 13.9 km - Blue Line Southern Extension (Hua Lamphong - Bang Khae) with a price tag of 48.241 billion baht (4.8 km underground + 9.1 km elevated tracks -> 10 stations) which could be constructed and designed in mid 2005 and open for service by the end of 2009.
1.2) 20 km - Orange Line (Bang Kapi - Samsen) with a price tag of 62.213 billion baht (18.5 km underground and 1.5 km elevated track -> 14 stations) which could be constructed and designed in mid 2005 and opened for service by the end of 2010.
1.3) 20 km - Purple Line (Bangyai - Phra Nanklao - Bangsue -> former Blue line Northern extension) with a price tag of 37.201 billion baht (14 elevated stations) which could be constructed in the mid 2005 and opened for service by the end of 2008.
1.4) 15 km - Purple line (Samsen - Ratboorana -> former Orange line) with a price tag of 42.410 billion baht (9 km underground and 6 km elevated track) which could be constructed at the end of 2005 and opened for service by the end of 2010.
2) 22.1 km - Phase 2 -> New section which requires environmental assessment and new design.
2.1) 13.1 km - Blue Ring (Bangsue - Charansanitwongse - Tha Phra) - with a price tag of 15.544 billion baht (7 elevated stations) which will be constructed in early 2006 and open for service at the end of 2009.
2.2) 5 km - Purple Link Line (Bangsue - Samsen) -> with a price tag of 14.974 billion baht (3 elevated stations) constructed in early 2006 and opened for service in early 2010.
2.3) 4 km - Orange line (Samsen - Bang Bumru) -> with a price tag of 11.055 billion baht (2.5 km underground and 1.5 km elevated -> 1 underground station and 2 elevated stations) constructed in early 2006 and opened for service in early 2010.
This will be definitive design with much more detail than preliminary design. The first three sections will be started first with Bangsue-Bangyai section as the very first to start since it is all elevated track and MRTA is going to pay 300 million baht to hire the consultant to handle the final design.
MRTA complained that the price tag BMCL has set up is too much -> 17.5 billion baht against the 7 billion baht MCL has invested (25% of stock at 1 baht/share and the other 75% at 3 baht/share). Therefore, MRTA will negotiate with both creditors (which are shareholders of BMCL) and Ch. Kanchang PCL. until they get a much better deal at lower prices.
MRTA also hired Business Terminal Co.Ltd. to handle stores around MRTA stations as parking lots for taxi, tuk tuk, vans and motorcycle cabs near the gates of subway stations. Thus Business Terminal Co.Ltd. is asking BMCL to facilitate the movement of the cars around MRTA Subway stations.

The subway routes of the future - February 5, 2004
Chatchawal explains the readjusted subway lines: I have been closely following news from the Transport Ministry and the OTP (Office of Transport and Traffic Policy Planning) since mid-2003. Changes have been made to the routes planned for the Subway / Skytrain future lines and their extensions. These changes have been confirmed by the authorities and they seem to be serious about working under this new plan, hence the changes are likely to materialise.
The subway lines make up the core changes under the new plan, officially called the 'Development Plan for Bangkok Mass Rapid Transit' (BMRT).
In December 2003, news about the alternative extended routes for the Blue Line (Chaloem Ratchamongkhon Line -- under the MRTA's supervision) broke in local newspapers.

Above: The plan for future subway lines as of January 2003 (see below for the new plan)
Under the original plan, the Blue Line will see 2 extensions -- northern and southern extensions. The northern extension runs from Bang Sue to Saphan Phra Nangklao in Nonthaburi and the southern extension runs from Hua Lamphong to Bang Khae via Tha Phra.
The new routes for the blue line are as follow: Instead of running northwards towards Nonthaburi, the Blue Line runs westwards from Bang Sue towards Bang Pho along Thanon Pracharat Sai 2. It is likely that immediately after Bang Sue Station, which in underground, the line will be elevated.
Crossing the Chao Phraya River, the line turns left at Thanon Charan Sanit Wong and goes southwards towards Bang Phlad, Bangkok Noi and Bangkok Yai The Blue Line eventually terminates at Tha Phra, connecting the Blue Line's Southern extension route.
It is very likely that the southern extension route (Hua Lamphong -- Tha Phra -- Bang Wa -- Bang Khae) remains unchanged.
Further extension from Tha Phra to Queen Sirikit National Convention Center via Rama III has been included included in this new plan, but that's only in a distant future. The Blue Line will become a loop which I would call a "Bangkok Lariat".
Since the section of the Blue Line along Thanon Charan Sanit Wong will be elevated, there will be a problem at Phra Pin Klao Intersection as there are Borommarat Chachonnani Elevated Road and a flyover beneath it. These elevated carriage-ways will physically form a 'wall' which does not permit the elevated Blue Line to cut straight through.
Crossing over the 'wall' will mean that the train viaduct has to be raised to a height so high that it becomes a great engineering challenge.
This is not a new problem, the BTS Skytrain also faces similar difficulties as it tries to extend northwards (Mo Chit -- Kaset -- Saphan Mai) and so far, making a detour around Lat Phrao Intersection is the highly anticipated solution because of the presence of Uttraphimuk Expressway (a.k.a. Don Muang Tollway) and a flyover beneath it at Lat Phrao Intersection. Fortunately, the Government officials planned the Bang Na Intersection well and avoided similar problems occurring there.
The now-under construction S1 Third-Stage Expressway (At Narong -- Bang NA) will be built so high over Bang NA Intersection so that the BTS Skytrain On Nut -- Samrong -- Samut Prakan extension can run just below it, and at the same time, the Skytrain viaduct will be high enough to allow vehicles entering / leaving Chaloem Mahanakhon Expressway along the existing flyover to run below. I believe that this type of 4-tier crossing will become a commonplace in Bangkok in the future.
Another exciting update includes changing the routes for the planned Orange Line, also a project under MRTA's supervision. The original plan is a long line running from Bang Kapi to Rat Burana Under the new plan, the Orange Line run strictly in an east-west direction.
It will not turn southwards at Sam Sen Road and it no longer runs towards Wang Burapha, Wong Wien Yai, Chom Thong and Rat Burana.
Instead, the Orange Line runs westwards along Thanon Rajavithi and Thanon Sirindhorn in Bang Phlat district. Under the new plan, the Orange Line will terminate at Bang Bam Ru where it will intersect with one of the Red Lines under the SRT's commuter train project.
What will happen to residents living along Nonthaburi and Thanon Suk Sawat where the original Blue Line's northern extension and half of the original Orange Line have been withdrawn? The Purple Line is the answer.
Originally, the MRTA wants the Purple Line to run from Sam Sen to Bang Sue and goes northwards along Thanon Pracha Chuen. However, there has been a lack of any serious discussion or effort put into this line until late last year.
Under the new plan, the Purple Line will materialise sooner that the original plan. The Purple Line will also run on a different route which is longer in a north-south manner.
The new Purple Line will begin at Saphan Phra Nangklao in Nonthaburi and runs along the same route as that of the cancelled Blue Line's northern extension. It will also be elevated in along this section.
The Purple Line intersects the Blue Line at Thanon Pracharat Sai 2 and runs southwards towards Thanon Sam Sen. Before it reaches Sam Sen, it will go underground.
Traveling along Thanon Sam Sen, it cuts the Orange Line at Thanon Rajavithi, passing Kiak Kai, Thewet and the Central Bank at Bang Khumphrom.
From here it runs along the exact route as that of the Orange Line's cancelled section. The Purple Line will be elevated again at Dao Khanong and terminates at Rat Burana.
Additional elevated section from Saphan Phra Nangklao to Bang Yai at Thanon Kanchanaphisek (a.k.a. Western Ring Road) has also been included as part of the Purple Line, but it is not clear if this section will be constructed together with the rest of the line all at once.
Now that the Government has made a U-turn decision by wanting to run the subway by itself, the BMCL has been experiencing great pressure to give way since the beginning of the year. In one of the reports by a local newspaper, Mr. Suriya, the Transport Minister, might resort to making further adjustments in the subway routes, so that other lines owned and run by the Government will gain economic advantage at the expense of the Blue Line ridership. Personally, I feel that the planning of subway routes should not be influenced by any of these political factors and planning should be geared towards maximum benefits of the locals, financial sustainability, economic contributions etc. I hope this is just a threat from the Government and both parties should reach an agreement soon. So far, BMCL has offered the government to purchase 25% stake in the company, but that might not completely please the Transport Minister who demands a complete take-over. Talks will continue in February and an agreement should be reached in the middle of this year. I strongly support creating an integrated mass transit system for Bangkok, especially when it comes to fare collection. Integration will ensure a successful
public transport policy and this will ensure the maximum ridership for the entire system.
I hope that small pictures will well illustrate what I have been describing to you. Personally, I find the new route of the Blue Line really odd-looking, but as long as they are seriously working it out and get it done as soon as they can, I am happy with the changes in general. Loop lines and circle lines are nothing new in many metro system across the world. Our neighbour, Singapore, is busy constructing an entirely underground Circle Line to relieve congestion in the city. The routes under the new plan, if constructed together all at once, should serve Bangkok better than those under the former plan. The changes will be reflected in my January 30th version of my map.
UPDATE: There are more changes as of today, confirming the January 29th news from Than Setthakij (Meddling in mass transit plans - translated and summarized from Than Setthakij, January 29-31, 2004)
Further changes include replacing a section of the MRTA's Blue Line along Thanon Phetchakasem by the BTS Dark Green Line. Hence, the BTS Taksin extension will not only go to Wong Wien Yai and Bang Wa, but it will also make a westward turn into Thanon Phetchakasem and goes towards Bang Khae. On the other hand, the MRTA's Blue Line southern extension will still proceed but the line will terminate at Bang WA instead.
Secondly, the BTS skytrain lines might see a change. Currently, there are Silom and Sukhumvit Lines, but under the new plan, trains from On Nut / Samrong will go towards the National Stadium after Siam station instead of turning north towards Mochit.

Above: The plan for future subway lines as of January 2004

This will become the Light Green Line. Meanwhile, trains from Saphan Taksin will turn northwards
after Siam station and head for Mochit instead of making a short trip to the National Stadium. This, therefore, becomes the Dark Green Line. Nevertheless, these changes with regards to the BTS Lines have not received any official confirmation and more studies related to the plan's viability is still pending. Hence, the likelihood of it materialising is lower than the other routes changes that we have been discussing so far. More information can be obtained from this map (from the Office of Transport and Traffic Policy and Planning).
Also see the Updated Bangkok future mass transit map and the forum to discuss the map.

Names of extension subway stations - translated and summarized from the MRTA website, February 6, 2004
[It is worth noting that some of the station names of the subway lines being completed now were later changed.]

The official named for the extension line stations:

Orange Line -34.6 km -> 28.1 km underground + at grade and 6.5 km elevated
Elevated Section
1) Bang Kapi
Underground Section -> either a single tunnel with double track, 0.50 m thick wall and 10.7m diameter or a double tunnel with 0.30m thick wall and 5.7m diameter, central and side platform with platform door--20 m wide and 250 m long platform
2) Lam Sali
3) Hua Mark
4) Hua Mark Stadium
5) Ram Khamhaeng
6) Nawasri
7) Lad Phrao Canal
At-grade section
Underground Section
9) Thai Cultural center -> Interchange with Blue line
10) Prachasongkhrau -> Public Welfare Housing
11) Din Daeng -> Din Daeng Intesection
12) Victory Monument -> Ratwithee Section of Victory Monument - Interchage with Skytrain
13) Ratchawithee -> Yothee Intersection near Chitladda Palace
14) Dusit Zoo
15) National Library
16) Bang Khunphrom
17) Phan Fah -> Phan Fah Bridge
18) Wang Boorapha -> Interchange with Blue line
19) Memorial Bridge (Thonburi Side of the Bridge to prevent any damage on King Rama I Monument)
20) Wongwian Yai -> the interchage at Bang Wah has ended any further need for interchage with Skytrain at Wongwian Yai
21) Sam Reh
22) Mahai Sawan -> near Bangkok Bridge
Elevated Section - 11.6 km all elevated. -> Central platform like Siam Station of the Skytrain. -> 250 m long 18 m wide ... the distance for each pillar will be 30m--no platform door
23) Chom Thong -> near Chom Thong Intersection
24) Dao Khanong -> Bang Mod Intersection--Intersects with Rama II Highway with Park and Ride
25) Bang Pakok
26) Pracha Uthit -> Intersects with Expressway near Rama IX Bridge
27) Rat Boorana -> The last station within the Thonburi Jurisdiction of Bangkok, near Soi Suksawat 35 with Park and Ride
Northern Extension of Blue line -11.6 km, all elevated. -> Central platform like Siam Station of the Skytrain. 250 m long 18 m wide--the distance for each pillar will be 30m--no platform door
1) Tao Poon (near Tao Poon Police Station)
2) Wong Sawang near Wong Sawang Intersection
3) Nakhon In -> the starting point of Nakhon In road -> before reaching Tiwanon Intesection
4) Rewadee -> Soi Rewadee
5) Kae Rai -> Near Jusco Kae rai
6) Sri Porn Sawan -> near the shortcut to Nonthaburi Pier
7) Phra Nangklao -> before reaching Sanambin Nam intersection--with Park and Ride
Southern Extension of Blue Line - 13.8 km
Underground Section -4.8 km either a single tunnel with double track, 0.50 m thick wall and 10.7m diameter or a double tunnel with 0.30m thick wall and 5.7m diameter, central and side platform with screen door--20 m wide and 250 m long platform
1) Wat Mungkorn
2) Wang Boorapha -> between Sam Yod Intesection and Chaloemkrung Intersection
3) Pakklong Talad -. Near Grand Palace Police Station
4) Bangkok Yai -> near Wat Arun and RTN HQ
Elevated Section -> 9 km -> Central platform like Siam Station of the Skytrain -> 250 m long 18 m wide--the distance for each pillar will be 30m--no platform door
5) Tha Phra (Tha Phra Intersection)
6) Bang Phai
7) Bang Wah (Southern Bangkok Transportation center)
8) Phasee Charoen
9) Bang Khae
10) Lak Song (near The Mall Bang Khae, with Park and Ride)

Quick subway extension overview - January 20, 2004
Chatchawal Phansopa wrote this concise overview of the state of subway extensions: There are two lines under the supervision of the MRTA which are likely to be built in the near future. These are the orange line and blue line (the purple line running through Nonthaburi is still under planning... no serious efforts has been put into it yet).
The subway line which is about to open this April is the initial phrase of the blue line. Together with the northern and southern extensions, the blue line runs from Bang Khae to Hua Lamphong to Bang Sue to Saphan Phra Nangklao.
Besides the blue line, the orange line is another route currently under intensive studies and planning by MRTA as it seems economically feasible to construct. The orange line runs from Bang Kapi along Ramkhamhaeng Road to the MRTA depot in Huai Khwang, intersecting the blue line at the Cultural Center. From there it runs towards the second BMA Headquarters (a.k.a. BMA2) in Pracha Songkhro and cuts the BTS Sukhumvit Line at Victory Monument. Along Rajavithi Road, it runs towards the Dusit Zoo and make a left turn at Sam Sen Road, passing the National Library, Thewet, Bang Khunphrom (The Bank of Thailand). Making another left turn into Phra Sumaen Road, it passes Pom Mahakan Intersection at Ratchadamnoen Klang Avenue where it will intersect with one of the extended BTS routes. From here it runs along the right bank of the Klong Ong Ang towards Wang Burapha and intersects, once again, with the MRTA's blue line. Crossing the Chao Phraya River around Saphan Buddha Yodfa Chulalok (Memorial Bridge), it travels down Pracha Thipok and Somdet Phrachao Taksin Roads, calling at Wong Wien yai, Sam Rae and Mahai Sawan. Finally, it runs along the the same stretch of road (now Suksawat Road), passing Chom Thong, Dao Khanong, Bang Pakok and Pracha Uthit, terminating at Rat Burana.
The orange line is largely underground, except for the stretch from Chom Thong to Rat Burana and at the other tail from Lam Sali to Bang Kapi where it will be elevated. Park & Ride facilities are expected at Rat Burana and Bang Kapi terminals. Further extensions for the orange line are still pending and they include an extension from Bang Kapi to Min Buri (along Ramkhamhaeng Road a.k.a. Sukha Phiban 3 Road), another from Rat Burana to the Southern Outer Ring Road along Suksawat Road. No additional depot is planned specially for this line and it will use the existing facilities at Huai Kwang Depot. Nevertheless, when the orange line has been extended towards Min Buri, there might be one constructed in the Eastern suburb, but that is still in the very distant future.

New subway station names - October 16, 2002
Translated and summarized from the MRTA website. MRTA changed some station names to correspond with the names of significant places, landmarks, roads, and local names of the places.

Old New Reason
Pracharat Bumphen Huay Kwang Most people are more familiar with Huay Kwang than with Pracharat Bumphen.
Thiam Ruam Mitr Thai Cultural Center Thiam Ruam Mitr Road is not a main road. Therefore, MRTA selected a significant bureaucratic place (Thai Cultural Center) close to the station instead.
Ratchada Ratchadaphisek The station is on Ratchadaphisek Inner Ring Road (a ring road initiated by His Majesty The King as a gift to his Bangkok subjects during the Silver Jubilee of His Majesty's Reign in June, 1971).
Mochit Chatuchak The station is near Chatuchak park, a park that became more significant than Mochit Market. The park was established in 1975 by SRT to commemorate the 4th cycle of His Majesty (48-years old).
Bon Kai Klong Toei The station is in Klong Toei area, not Bon Kai

Full list of updated subway station names - October 18, 2002

Here's a complete list of subway station names (translated and summarized from the MRTA website).

Left: Rendering of the Lad Phrao Park-and-Ride

Station name Location Dimension Depth Platform Gates
Hua Lamphong Between Rong Muang and Hua Lamphong intersection in front of Hua Lamphong Station with a permanent exhibition about the MRTA project and the history of transportation in Thailand 23 m x 206 m 14 m Central 3
Sam Yarn Sam Yarn Intersection near Wat Hua Lamphong and Chula Hi-tech--along Rama 4 Road 22 m x 174 m 14 m Central 2
Silom Under the Thai-Japanese Flyover at Saladaeng Intersection in front of Dusit Thani Hotel 30 m x 156 m 30m Stack 2
Lumphini Sathon Intersection opposite to Suan Lum Night Bazaar (aka Soo Laew Ruay Market) 20 m x 172 m 26 m Stack 3
Klong Toei In front of MEA office (Klong Toei) near the expressway and Maenam Intersection 28 m x 202 m 18 m Side 2

Queen Sirikit Convention Center

Opposite the new Stock Exchange of Thailand and Soi Phai Singtoh (to be decorated with traditional Thai decorations) 23 m x 196 m 17m Central 4
Sukhumvit Asok Road, near Asok-Sukhumvit Intersection in front of Asok market 23 m x 199 m
17 m Central 3
Phetburi Asok Road, near Asok-Phetburi Intersection near the Japanese Embassy and the Eastern Railway 23 m x 200 m 20 m Central 3
Rama 9 In front of Fortune Town Building and Rama 9 Intersection 23 m x 199 m
18 m Central 3
Thai Cultural Center In front of Thai Life Insurance HQ 27 m x 340 m 19 m Central 4
Huay Kwang Huay Kwang Intersection 23 m x 266 m
19 m Central 4
Suthisarn Suthisarn Intersection - near Suthisarn Police Station 23 m x 226 m 19 m Central 4
Ratchadaphisek In front of Plathong Karat Building 23 m x 226 m
19 m Central 4
Lad Phrao Lad Phrao Soi 21--connected to the Park and Ride Facility 22 m x 258 m
18 m Central 4
Phaholyothin Lad Phrao Intersection near Central Lad Phrao and Saint John's School 22 m x 226 m
18 m Central 5
Chatuchak At Chatuchak Park near the Morchit Skytrain Station 30 m x 336 m
17 m Central 4
Kamphaengphet Near Chatuchak Weekend Market and the Agricultural Market Organization 23 m x 226 m 17 m Central 3
Bang Sue Near Bangsue junction 30m x 226 m
12 m Side 2
MRTA map showing proposed extensions and other mass transit projects (August, 2000 - Thai). This map shows the proposed subway extensions.
Green - BTS Skytrain
Blue solid - Blue line subway (under construction)
Blue dotted - Blue line subway (proposed)
Orange - Orange line subway (proposed)
Red - State Railway of Thailand rail system (existing and proposed)
Purple - High speed train (proposed)

Sources for the lists below: 1997 MRTA master plan and information from Thai magazines and newspapers. The latest updated station list he found is from Transport and Travel Journal Weekly, November 8-14, 1999 and November 15-21, 1999. He found updates for the Blue Line in the latest MRTA brochure.

Blue Line (Initial System Project) - 20 km
February 10, 2000

    The route starts from Hua Lamphong railway station and continues along Rama IV Road, then runs northward along Ratchadapisek Road to Lat Phrao Road and runs northwest along Lat Phrao Road to Central Plaza, then southward passing the North and Northeastern Bus Terminal and finally westward to Bang Sue railway station as the end of the line.
    Park and ride: 2000 car facility at Lat Phrao Station.
    Presently under construction. The Bangsue-Huay Kwang section of the MRTA Blue Line will open in December 2002. The rest will be done in July 2003. However, delays in digging the tunnels and laying the tracks may push the whole project opening back to early 2004.
    The station list is from an MRTA brochure and Prachachart Thurakit ( November 25-28, 1999.

Right: Thai map of the Blue Line

18 stations
01) Hua Lamphong - northern side of Rama IV Road, between Jarumueng and Mahaphruttharam Road (AKA Hua Lamphong and Saphan Lueang Intersection respectively)
02) Samyan - southern side of Rama IV Road and the eastern side of See Phraya Road - in front of Wat Hua Lamphong, not far from Chula Hi-tec Center Building
03) Silom - southern side of Rama IV Road and the eastern side of Silom Road (AKA Windmill Road) - in front of Dusit Thanee Hotel - will be a transfer station to BTS Skytrain
04) Lumphinee - southern side of Rama IV Road and the eastern side of Sathorn Intersection (Sathorn Tai Road) - not far from Lumphinee Boxing Ring and Cadet preparation Academy (The Academy will move to Khao Cha-Ngok, Nakhon Nayok, not far from Chulachomklao Royal Military Academy)
05) Bonkai - southern side of Rama IV Road and eastern side of the Maenam Railway Line (to Port Authority of Thailand) and Chaloem Mahanakhon Expressway - not far from Klongtoei neighborhood
06) Queen Sirikit - Ratchadaphisek Inner Ring Road, opposite to Queen Sirikit National Convention Convention Center, not far from Phai Singto neighborhood
07) Sukhumvit - Asok Road (Sukhumvit 21), the northern section of Sukhumvit Intersection - will be a transfer station to the BTS Skytrain not far from the Siam Society
08) Phetburi - Asok Intersection and Phetburi Road - near the Embassy of Japan - this one will be a showcase so the Bangkokians will learn what the MRTA stations will look like
09) Rama IX - Ratchadaphisek Inner Ring Road, at the North of Rama IX intersection to Huay Kwang intersection
10) Thiam Ruammit - Ratchadaphisek Inner Ring Road - same side of Thai Life Insurance Building, not far from the Thai Cultural Center
11) Pracharat Bumphen - center of Huaykwang Intersection near Pracharat Bumphen Road (a shortcut to Ladphrao Road - via Ladphrao Soi 80 (80th Lane of Ladphrao Road)
12) Suthisarn - center of Suthisarn intersection, near Suthisarn Road (RCA II is at Suthisarn Road)
13) Ratchada - in front of P. Karat Building
14) Ladphrao - around Lad Phrao Soi 21 (21st Lane of Ladphrao Road), near Ratchada-lad Phrao Intersection - Park and Ride will be here.
15) Phahol Yothin - Lad Phrao Intersection, near Lad Phrao flea market and Central Plaza - Lad Phrao Branch
16) Mo Chit - in Chatuchak Park - will be at transfer station to the BTS Skytrain
17) Kamphaeng Phet - opposite of Agricultural Central Market Organization - same side at Chatuchak
Weekend market, not far from Moh Chit 2 Bus Terminal
18) Bang Sue - not far from Bang Sue Junction, the 2nd stage Expressway

Blue Line Transfer Stations

1) Tao Poon Intersection - a station next to Bang Sue Junction - for the Blue Line (northern extension and the future Purple Line)
2) Bangsue Junction - the northern end of Blue Line and the moribund Hopewell Project - AKA Red Line
3) Moh Chit - the Bangkok Terminal to the green and the blue line
4) Thewet - the southern end of the future Purple Line and the Orange Line
5) Dusit - the Orange Line and the moribund Hopewell (Red Line) - the Hopewell section - if ever implemented at all - need to get the Royal approval first - otherwise they won't be able to construct it at all - the station will be higher than the Chitladda Palace!
6) Victory Monument - the Green Line of BTS and the Orange Line
7) Thai Cultural Center - the Blue and the Orange Line
8) Ratchadamnuen Avenue - the Orange Line -  and the Red Line - Northwestern section of the moribund Hopewell - if ever implemented
9) Yommarat - all Hopewell sections will meet here but probably not in our life time .... sigh!
10) Phayathai - the Green Line and the Red Line (Hopewell) ... if ever implemented at all
11) Rama IX - the Blue Line and the Red Line (Hopewell) ... if ever implemented at all
12) Phutthayodfah-Phapokklao Bridge - the southern extension of the Blue Line and the Southern section of the Orange Line will be meet here
13) Hua Lamphong - the southwestern section of that Hopewell Red Line and the Blue Line will be met here
14) Siam Square - the most obvious interesection - opened December, 1999
15) Asok-Sukhumvit - the Blue Line and Green Line probably meet here
16) Wongwian Yai (Thonburi Circle) - the Blue, Orange and the moribund Red (Hopewell) Line (Wongwian Yai Railway Station)
17) Silom (Windmill Road)  - the Green and the Blue Line will be probably meet here
18) Bang Na - the Green Line will be separated into 2 sections here - one goes to Samrong and the other goes to Nong Ngoo Hao Airport - Southern Terminal

Bangkok Subway status in 1999
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