# Weak soil, trapped water caused Lucknow-Kanpur Expressway failures: IIT Kharagpur 2026-08-17T18:55:48+00:00 | Governance | Indian Opinion Desk Corroboration: 2 independent outlets An expert assessment by an IIT Kharagpur professor has found that weak, highly plastic soil and trapped water are the primary causes of premature failures on the Lucknow-Kanpur Expressway. The National Highways Authority of India (NHAI) said the highway's layers themselves showed no major deficiency in thickness. The report also pointed to drainage problems, with water getting trapped in depressed sections partly because unpaved shoulders restricted flow. The assessment recommended rebuilding affected stretches from bottom up where soil strength is below design assumptions. It also stressed the need for a detailed survey to identify weak soil at the earliest. NHAI has said it aims to complete repairs by end of September. Toll collection on the entire expressway remains suspended. Separately, a 10-metre-deep crater has opened on Uttar Pradesh's Ganga Expressway near kilometre 421 after heavy rain, as India Today reported. The damage on the Rs 36,000-crore corridor, inaugurated by Prime Minister Narendra Modi in April, has renewed scrutiny of construction quality. The Uttar Pradesh Expressways Industrial Development Authority (UPEIDA) has sent a team for repairs. ## Coverage - timesofindia.indiatimes.com - indiatoday.in This story was synthesised by AI from the 2 sources linked above. Updated: this story now draws on 2 sources. Last updated 2026-08-18T03:37:05+00:00. Tags: IIT-Kharagpur, Lucknow-Kanpur Expressway, NHAI, Uttar Pradesh Canonical: https://indianopinion.org/weak-soil-trapped-water-caused-lucknow-kanpur-expressway-failures-iit-probe/ License: Summary and commentary (c) Indian Opinion, reusable with attribution. Facts belong to the linked sources. Cite: https://indianopinion.org/weak-soil-trapped-water-caused-lucknow-kanpur-expressway-failures-iit-probe/#story-in-brief How this brief was made: an AI model read the reports linked above and wrote this summary and analysis, which were published automatically. Published briefs are sampled every hour by an automated quality check; the editor verifies its findings and approves corrections, and corrected briefs carry a dated correction line. Stance labels are editorial classifications of how each outlet framed this story, assigned by the same model, not ratings of the outlets. We do no original reporting. Methodology: https://indianopinion.org/ai-use-policy/