How does climate change-induced extreme rainfall increase risks to India's ageing urban and transport infrastructure? Discuss with examples.

Studies by IMD and Ministry of Earth Sciences institutions confirm rising frequency of heavy rainfall events in recent monsoons [1]. When such intensified rainfall meets colonial-era and poorly maintained assets, ordinary weather becomes a structural hazard — as the July 2026 collapse of the ~150-year-old clock tower at Kozhikode railway station showed [3].

Structural fatigue of ageing assets

• Old brick-and-lime masonry absorbs moisture and loses cohesion under prolonged saturation; the Kozhikode tower, part of a line opened in 1888, fell after days of heavy rain despite cracks noticed a day earlier [3].
• Ageing bridges, culverts and station buildings were designed for historic rainfall return periods, now exceeded more often.

Amplification in urban catchments

• NDMA notes urbanisation raises flood peaks 1.8 to 8 times and volumes up to 6 times, so the same rain stresses drains, embankments and foundations far harder [2].
• Concretisation, encroached wetlands and choked stormwater drains cause waterlogging and scouring around track formations and road sub-bases.

Cascading transport and economic disruption

• Rail and road are network systems — one failed span or flooded platform delays trains across a corridor, as train services on the Mangaluru–Thiruvananthapuram route were on the day of the collapse [3].
• Repair and rerouting costs inflate large modernisation projects; over 1,338 stations are being rebuilt under the Amrit Bharat Station Scheme, much of it around live century-old structures [4].

Governance and audit gaps

• Structural safety audits are episodic rather than climate-informed; risk was flagged only hours before failure at Kozhikode [3].

The risk is therefore compounded — a rising hazard meeting a weakening asset base inside dense, poorly drained cities. The way forward lies in mandatory periodic structural audits, revising IS design codes for updated rainfall intensities, heritage-sensitive retrofitting under ABSS [4], and using the India-led Coalition for Disaster Resilient Infrastructure to mainstream resilience into every new investment [5]. Building climate-proof infrastructure is essential to SDG 9 and SDG 11.