The Naga Students' Federation (NSF) has raised concerns about workmanship, prolonged delays and negligence in execution and maintenance of projects by the National Highways & Infrastructure Development Corporation Limited (NHIDCL) in Nagaland. The federation issued a statement on August 19, 2026 from Kohima outlining the complaints. It said the problems affect several major routes. It pointed to the upgraded four-lane Dimapur-Kohima road as a principal example where, despite a completion certificate issued in 2023, stretches show structural damage such as collapsing side walls, inadequate slope protection and poor drainage. Delayed repair and maintenance have allowed deterioration to persist. The federation also questioned whether several bridge structures on the corridor meet the upgraded highway standards. The NSF said the project is under a five-year Defect Liability Period (DLP) yet alleged that necessary rectification works have not been carried out, raising concerns about construction quality, supervision and accountability of NHIDCL and contractors. It flagged design and execution deficiencies, absence of median beautification and landscaping, poor road furniture, weak safety barriers and insufficient indicators, reflective markers and warning signage. The federation warned these shortcomings increase safety risks during adverse weather and night travel. It said similar concerns have been reported at other NHIDCL sites including the Kohima bypass, Kohima-Mao upgradation, Dimapur bypass, slope protection works along NH-29, the Akash Bridge–Jessami road on NH-202 and the Peren-Dimapur section of NH-129A packages two and three. The NSF questioned why disciplinary or punitive action has not been taken against contractors despite repeated public complaints. It demanded comprehensive inspection of all NHIDCL projects in Nagaland, repair of defects covered by the DLP and completion of pending drainage, slope protection, retaining structures and road safety installations. The federation urged the Nagaland Government to intensify engagement with NHIDCL and warned that continued negligence could prompt it to initiate appropriate democratic measures.