Sikkim’s road network is primarily maintained by the:

National Highways Authority of India (NHAI)
State PWD
Roads & Bridges Department (Sikkim)
Private companies

The correct answer is: c) Roads & Bridges Department (Sikkim).

The Roads & Bridges Department (R&B Department) is the government agency responsible for the construction, maintenance, and operation of roads in Sikkim. The R&B Department is a part of the Ministry of Public Works (PWD) of the Government of Sikkim.

The R&B Department has its headquarters in Gangtok, the capital of Sikkim. The department has a network of offices across the state, which are responsible for the maintenance of roads in their respective areas.

The R&B Department is responsible for the construction and maintenance of all national highways, state highways, and major district roads in Sikkim. The department also maintains a network of rural roads, which are used by the people of Sikkim for their daily commute.

The R&B Department is a vital part of the infrastructure of Sikkim. The department plays a key role in the development of the state and in the improvement of the lives of the people of Sikkim.

The other options are incorrect because:

  • The National Highways Authority of India (NHAI) is a government agency responsible for the construction, maintenance, and operation of national highways in India. The NHAI does not have any jurisdiction over roads in Sikkim.
  • The State PWD is a government agency responsible for the construction, maintenance, and operation of roads in the state of Sikkim. However, the R&B Department is the primary agency responsible for the maintenance of roads in Sikkim.
  • Private companies are not involved in the maintenance of roads in Sikkim. The R&B Department is the sole agency responsible for the maintenance of roads in Sikkim.