As you want to get info about railway projects of RITES Limited and for the same looking for its kolkata address , so here I am telling require info:

Address:
RITES Limited  
CR Ave Rd, Calcutta Medical College, College Square, Kolkata, West Bengal 700012

RITES Limited railway projects
SNTF, Algeria, consulting
Luanda Railway (CFL), Angola, feasibility study for rehabilitation
Bangladesh Railways, Bangladesh, consultation
Botswana Railways, Botswana, management support and consultation
Cambodian Railways, Cambodia, rehabilitation
Red Atlantic Railway Network, Colombia, equity partner, technical and managerial support
Ghana Railway Corporation, Ghana, consultation
Iran Railways, Iran, planning
Iraqi Republic Railway Establishment, Iraq, operation and maintenance of Baghdad - Al Qaim - Akashat section.
Kenya Railways, Kenya, locomotive operation, restructuring, planning
Central East African Railways, Malawi, management services.
Beira Railroad Corporation (CFM Central), Mozambique, rehabilitation and management
Nigerian Railways, Nigeria, complete management (3 years), revitalization, planning
Sri Lanka Railways, Sri Lanka, consulting and management assistance
Sudan Railways, Sudan, consulting
Tanzania Railway Corporation, Tanzania, general management
Uzbek Railways, Uzbekistan, Expert based consultancy for Elastic Fasteners and Accounting System project
Zambian Railways, Zambia, improvement project
National Railways of Zimbabwe, Zimbabwe, investment plan
Bangalore Metro Rail Corporation, As a lead partner to General Consultants.
Designer Support for first fully welded 5 km long Bogibeel Bridge at Dibrugarh, as Design Consultants.
Patna Metro,for preparing its DPR(Detailed Project Report).
Railways of Jamaica