MRTA Blue Line Extension Project


  • Railways


Dorsch Consult asia Co., Ltd.

Construction Sum

1 Billion Euro

Number of Employees



Mass Rapid Transit Authority of Thailand


From 2011 to 2016

Project Activities

Dorsch Consult Asia Co. Ltd. as part of the index group was awarded Project Management Consultant to supervise all contractors and the Construction Supervision Consultant.

Project Management Consultancy

  • Act as the Client’s representative.
  • Manage the overall project in order for EPC Contractor to delivery the works within time & budget and scope.
  • Make recommendations to MRTA & Assist MRTA to expedite and control the construction and installation works until successful completion.
  • Quality Management.
  • Advise MRTA on final acceptance.
  • Certify related contract payments requested to MRTA.
  • Provide contractual and Legal advice with regard to the project.
  • Establish a document control and management system and maintain it for the duration of the contract.


Dorsch Consult asia Co., Ltd.

Bangkok (Headquarters)
1168/45 Lumpini Tower,
18th Floor
Rama 4 Road
Tungmahamek, Sathon

10120 Bangkok

Phone: +66 2 - 679 89 00
Fax: +66 2 - 679 89 95

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The Dorsch Group was previously involved in the planning of this project as part of the Three Lines Project in 2005. This is now the implementation of the Blue Line Extension, in total 27 km with 19 Stations. Part of the alignment is underground with a crossing underneath China Town and the Chao Phraya River with the remainder of the alignment elevated.

Five Contractors were awarded the execution of works with a total Value of 1.4 Billion Euro. Italian-Thai Development is constructing the first package, to design and build the 2.8-kilometre underground route from Hua Lamphong to Sanam Chai including two underground stations, worth Bt11.441 billion. Ch Karnchang is constructing the second package, to design and build the 2.6km underground route including two underground stations from Sanam Chai to Tha Phra worth Bt10.687 billion. The joint venture between Sino-hydro Corporation and Unique Engineering and Construction won the third package, involving the construction of the 11km Tao Poon to Tha Phraelevated rail line worth Bt11.284 billion. Sino-Thai won the fourth contract, involving construction of a 10.5km elevated railway from Tha Phra to Lak Song, worth Bt13.334 billion. Ch Karnchang will supply the trackwork system, worth Bt10.687 billion.

The Bang Sue -Tha Phra Section (so called "Circle Line") starts from Bang Sue Station, passing along Pracharat Sai 2 Road. It crosses over the Chao Praya River turns left along Charansanitwong Road until it reaches Tha Phra at Petch Kasem and Charansanitwong intersection. The length is 13.1 km with 8 elevated stations.

The Hua Lamphong – Lak Song Section starts at Hua Lamphong Station, goes underground along Charoen Krung Road, passes under China Town, Wang Burapha, and then turns left at Sanam Chai Road (Wat Poh) before crossing under the Chao Phraya River at Pak Khlong Talat.

The route continues under Khlong Bangkok Yai, it finally enters Petch Kasem Road and ends at Lak Song. The 4 underground stations end at Itsaraphap and the route becomes elevated for 7 stations. The length is 15. 9 km. with 7 elevated stations and 4 underground stations.