Railway managers have been warned by the Rail Accident Investigation Branch that Network Rail’s lineside slope monitoring systems may fail to give usable alerts during rapid failures, after an Avanti West Coast train derailed at around 83 mph near Shap Summit on 3 November 2025 when it struck landslip debris. Remote sensors on steel spikes at 2 m spacing recorded sub‑10 mm movements—below the 10–30 mm “green” alert threshold—before being rapidly buried, losing wireless signal and generating no alarm to control. The landslip followed heavy, sustained rainfall that overwhelmed a cutting‑slope drainage channel, and RAIB has urged duty holders to urgently review and, where needed, mitigate these monitoring limitations.

Satellite analysis of more than 16,700 US dams shows over 2,500 structures are both in poor condition and classified as high-hazard potential, meaning failure would likely cause loss of life. Geoscientists report many of these ageing embankment and concrete gravity dams lack adequate spillway capacity, suffer from seepage and erosion issues, and sit downstream of growing urban development. The findings point to large unfunded backlogs in dam safety upgrades, with implications for risk-based inspection, emergency drawdown planning and prioritisation of remedial works.

Scour is now confirmed by Moray Council as the likely principal cause of the Garmouth Viaduct collapse over the River Spey on 14 December, after an abrupt change in the river’s flow path is thought to have undermined the masonry or concrete support piers. Engineers are assessing how localised bed erosion and altered hydraulic conditions around the pier foundations triggered the failure. The case will sharpen scrutiny of scour risk assessments, real-time river monitoring and foundation protection measures on older rail and footbridges in dynamic gravel-bed rivers.