Overview

• Mexico City closed the underpass at Puente de la Concordia in Iztapalapa after a newly detected sinkhole and fissure, with police and civil protection cordoning the area for inspections.
• City agencies reported an oquedad about 1.5 meters in radius with up to two meters of depth and mapped a 138‑meter trajectory, assessing the feature as rain‑related rather than a hydraulic leak.
• The Attorney General’s Office said peritajes on the Sept. 10 gas‑tanker explosion found no baches or mechanical failures and estimated the vehicle’s speed at 44–46 km/h; health authorities report 31 deaths.
• Mexico City announced stricter hazardous‑materials transport rules, including a 30 km/h cap for such vehicles, time‑of‑day limits, route restrictions, higher fines, random roadside checks and new licensing and verification requirements.
• In Argentina, a major sinkhole on Acceso Sur at Carrodilla in Luján de Cuyo was linked to a ruptured cloacal collector, with traffic diverted as crews excavate and install a 500 mm protective steel pipe; officials expect several days of work.