New Delhi, Sept. 15 -- Commuters using key traffic corridors at Wazirabad, Outer Ring Road and Mathura Road are set to face traffic snarls in the upcoming months as the Public Works Department (PWD) undertakes crucial road-strengthening works at some of the city's busiest flyovers, officials of the department said. To be sure, the exact timelines of the works were not shared, as the imposition of the Graded Response Action Plan (Grap) during high levels of pollution in winter may also curb the activity. The works will be carried out on flyovers at Shastri Park, Seelampur, Gokulpuri, Rani Jhansi and Modi Mill, among others, they said. "The sanctioned works include resurfacing, cold milling and structural strengthening of key flyovers that co...