Mexico City Mayor Andrés Manuel López Obrador has approved the construction of second tiers atop two of the capital’s busiest roads, a plan that federal Environment and Natural Resources Secretary Victor Lichtinger considers counterproductive. In all, 20 miles of a three-lane second level will be built along Periférico, an inner ring road, and Viaducto Presidente Miguel Alemán, a key east-west artery. The work is expected to take several years and will be carried out at night. It will form part of a major but as yet unspecified series of public works projects, including further road construction, promised by López Obrador. López Obrador, a member of the left-wing Party of the Democratic Revolution (PRD) claims the project will ease congestion and speed public... [Log in to read more]