widening, improvement works and construction of retaining wall works including upkeeping in cheyyar (h) c&m sub division jurisdictiona) providing of retaining wall at km 2/0 & 3/4 of thiruvathipuram arni road (md505) (01-cridp-19-20-m-1037) b) widening from intermediate lane to two lane and improvements of thiruvathipuram arni road at km 3/4 - 6/0 including retaining wall at km 5/10 (md505) including upkeeping for a period of 60 months (01-cridp-19-20-m-1028)c) widening from intermediate lane to two lane and improvements of thiruvathipuram arni road at km 6/0 - 7/4 including retaining wall at km 6/2 (md505) including upkeeping for a period of 60 months (01-cridp-19-20-m-1029) d) widening from single lane to intermediate lane and improvements of vembakkam - vengalathur road at km 0/0 - 1/0 including upkeeping for a period of 60 months (01-cridp-19-20-o-2105)e) improvements to riding quality at km 0/0 - 3/0 of perungalathur - pappanthangal road including upkeeping for a period of 60 months (01-cridp-19-20-i-4022) f)improvements to riding quality at km 4/0 - 7/8 of pappanthngal - sumangali road including upkeeping for a period of 60 months (01-cridp-19-20-i-4021) g)improvements to riding quality at km 0/0 - 1/0 of pappanthngal - sumangali road including upkeeping for a period of 60 months (01-cridp-19-20-i-4020) h)improvements to riding quality at km 0/0 - 2/4 of perungattur - sirungattur road including upkeeping for a period of 60 months (01-cridp-19-20-i-4023) i)improvements to riding quality at km 9/0 - 10/8 of vembakkam - bokkasamauthiram road including upkeeping for a period of 60 months (01-cridp-19-20-i-4019)