ORIENTAL CONSULTANTS Co., LTD.
Profile ORIENTAL CONSULTANTS COMPANY LIMITED (OC) was established in 1957, one of the earliest founded in profession in Japan, as an independent firm of consulting engineers providing services mainly to civil engineering projects.
The Firm provides engineering consulting services to projects in the fields of highway, structures, traffic management, railway, marine, on-and off shore structures, urban development and transportation study, etc. The involvement of the Firm in all these fields can begin from the planning and feasibility study stages and continues throughout the final design, tender assistance and supervision of the construction, and to the management and maintenance stages of those projects. Currently, the Firm is involved with various stages of engineering consulting of project, worth approximate equivalent of US$15 billion in construction value.
The head office in Tokyo with branch offices in Osaka, Fukuoka, Nagoya, Sendai, Hiroshima, Shikoku and Shizuoka. The Firm, starting with some 30 engineers, now employs over 737 fulltime staff of which 591 are technical personnel including 259 registered consulting engineers.
Projects are dealt by various specialized engineering departments within the Firm, such as the Highway Department, the Structural Department, the Planning/Development Department, the Information/Research Department, etc. The Infrastructure Engineering Department deals with those projects in needs of integrated expertise of other engineering departments. The International Department superintends the progress and quality of all the international projects of both overseas and in Japan. The Engineering Headquarters looks into major projects to check the fundamental subjects and to upgrade, if necessary, to keep the engineering quality up to the highest standard and maintain the excellency of the Firm.

Fields of Activity ・Roads & Highways
・Railways & Guideway Systems
・Bridges
・Viaducts & Tunnels
・Traffic Engineering & Transportation Planning
・Regional & Urban Planning
・Pedestrian Bridges
・Ports & Harbors
・Sewerage Disposal
・Drainage & Channel Schemes
・Urban Facilities & Architecture
・Seismic Technology & Disaster Prevention

Scope of Services ・Inspection
・Survey
・Exploration
・Examination & Testing
・Investigation
・Research
・Analysis & Evaluation
・Planning
・Design
・Documentation
・Presentation & Appraisal
・Tender Assistance
・Construction Management
・Information Processing
・Computer Analysis & Database Control
・Feasibility & Socio-economic Study
・Environmental & Landscaping Study
・Technical Guidance Technology
・Transfer & Technological Development
Head Office Glass City Shibuya 3F, 16-28 Nanpeidai-cho,
Shibuya-ku, Tokyo 150-0036, Japan
Telephone: 03-6311-7570
Fascimile: 03-6311-8020
E-Mail: intl@oriconsul.co.jp
Home Page: http://www.oriconsul.co.jp

Overseas Office Colombo / Polonnaruwa / Galle / Ampara (Sri Lanka)
Ho Chi Minh City (Viet Nam)
Mukudahan (Thailand)
Istanbul (Turkey)
Addis Ababa (Ethiopia)
San Jose (Costa Rica)



Major Projects

Field Country Project
Highway/Road China Consulting Services for Henan Provincial Xinxiang to Zhengzhou Expressway Project
Kenya The Study on Road Maintenance System under the Framework of the Kenya Roads Board
Laos The Study on Improvement of Roads in the Southern RegionThe Northern Economic Corridor Project
Mozambique The Study on the Master Plan and Feasibility Study for the Road Development of the City of Maputo
Nicaragua The Study on Vulnerability Reduction for Major Roads
Sri Lanka Detailed Design and Feasibility Study on the Outer Circular Highway to the City of Colombo
Recovery, Rehabilitation and Development Project for Tsunami Affected Trunk Roads on the East Coast
Thailand Feasibility Study on Outer Bangkok Ring Road - Southern Portion
Viet Nam Detailed Design and Construction Supervision for the National Highway No.18 Improvement Project
Nepal Transport Connectivity Sector Project
Bridge Kenya Improvement of New Nyali Bridge and New Mtwapa Bridge
Reconstruction of Athi Bridge and Ikusa Bridge
Ethiopia Rehabilitation of Trunk Road Project
Laos Basic/Detailed Design and Construction Supervision for Reconstruction of Bridges on National Route 13, Phase II
Laos/Thailand Detailed Design / Consulting Services of the Second Mekong International Bridge Construction Project
Sri Lnaka Basic/Detailed Design and Construction Supervision for the Project for Reconstruction of Five Bridges
Basic/Detailed Design and Construction Supervision for the Construction of the Mahaweli Road Bridge
Laos The GMS North-South Economic Corridor Bridge Project
Costa Rica The Study on Capacity Development in Bridge Rehabilitation Planning, Maintenance and Management
Tunnel Turkey Consulting Services for Bosphorus Railway Crossing Tunnel Project
Viet Nam Consulting Services for Saigon East-West Highway Construction Project
Japan Structural Study of Shield Tunneling Section in Trans Tokyo Bay Highway Project
Railway/Subway/
MRT
India Preliminary Study on Development Study for the New Delhi Railway Station
Japan Feasibility Study and Detailed Design for Tokyo Line
Nakamozu Underground Yard of Osaka Subway System
Port/Airport Japan Preliminary Design of Access Bridge to New Osaka Airport
Planning and Detailed Design of Berth, 132m Long, with Landing Slope, Transshipment Yard and Accessory Equipment
Traffic Thailand Study on Traffic Operation Plan for Road
Pakistan Preliminary Study on the Development Plan of Urban Traffic System
Honduras The Tegucigalpa Urban Transport Study
Development Japan Masterplan Study on the Area Development of East Abukuma
Masterplan Study on Integrated Development of Kurume Conurbation
Water Supply Japan Consulting Services for Minato Ward Water Supply Backup Pipeline Project
Consulting Services for Iijima Industrial Water Distribution Pipeline Construction Project
Environment Japan Aesthetic Study of Adjacent Area of National Highway No.1, Yokohama
Environment Assessment Study on Ohji Extension Construction, Metropolitan Expressway
Architecture Peru Basic Design of Chavin National Museum
Ecuador Detailed Design and Construction Management of Community Centre for Environmental Education of Marine Reserve in Galapagos Islands
Dominica Preliminary Design of Training Centre for Trading Business Promotion


The Second Mekong International Bridge Project
Laos and Thailand