in his work by Chief Engineer, Planning(Roads); Chief Engineer, NH; and Chief Engineer, R&BRI. This Directorate also has three wings, viz. Roads wing; NH wing; and Mechanical wing. The Department also has a well-established research-cum-training institute called the Roads & Building Research Institute(R&BRI) at Pailan on Diamond Harbour Road.This organisation is responsible for ensuring quality control in ongoing works; training of officers of different wings; and for research work. The Department proposes to further upgrade it and turn it into a major training institute of Eastern India. There are four PSUs under PWD, viz. West Bengal Highway Development Corporation Ltd(WBHDCL); Mackintosh Burn Ltd(MBL); Westinghouse Saxby Farmer Ltd.(WSFL); and Britannia Engineering Ltd.(BEL). WBHDCL has been set up to undertake 4-laning works of State Highways and also for creation and construction of roads on PPP model. It has also completed several important projects and is in the process of undertaking some mega projects. MBL is essentially a construction company,with expertise in building and bridge projects. They are undertaking huge quantum of work on buildings and bridges of the Department as well as of other Government departments/PSUs. WSFL and BEL are basically engineering companies, which are under process of restructuring. Departmental Structure The Department has two directorates, viz. PW Directorate and PW Roads Directorate. Each of the directorates has its geographical units called Zones headed by a Chief Engineer. The entire State is divided into three Zones, viz. North Zone; South Zone; and West Zone.Below the Zones, there are Circles, which are headed by the Superintending Engineers and Divisions, which are headed by Executive Engineers. Under the Divisions, there are sub-divisions, which are headed by Assistant Engineers and further down sections, which are headed by Junior Engineers. Public Works Directorate is headed by Chief Engineer(HQ), who has Chief Engineer, Planning; Chief Engineer, Electrical; Chief Engineer, Electrical Planning; Chief Engineer, Social Sector; and Chief Government Architect to assist him. PWDirectorate has three wings, viz. civil wing; electrical wing; and architectural wing. PW Directorate is responsible for construction and maintenance of all buildings and building related projects. In addition, PW Directorateis also responsible for maintenance and upgradation of some roads in every district. Infrastructure for all VIP and VVIP visits of State headquarters/districts is created by PWD. The PW(Roads) Dte. is headed by Chief Engineer(HQ) PW(Roads) Dte. and he is assisted in his work by Chief Engineer, Planning(Roads); Chief Engineer, NH; and Chief Engineer, R&BRI.