improvement and strengthening work and construction of culvert, cc revetment works including upkeeping in thiruvallur & tiruttani (h) c&m sub division jurisdictiona)reconstruction of rcc box culvert at km 1/6 of tiruttani - nagalapuram road (01-cridp-19-20-m- 0966) b) construction of drain at km 0/6 - 0/10 of tiruttani subway approach road including reconstruction of c.c.revetment (01-cridp-19-20-o-1995) c) improvements to riding quality at km 0/0 - 0/8, 2/8 - 4/6, 7/6 - 9/2 of bugga - illathur road including upkeeping for a period of 60 months (01-cridp-19-20-i-3841) d) reconstruction of rcc box culvert at km 0/4, 0/6, 4/4, 7/8 of bugga - illathur road (01-cridp-19-20-o- 1990) e) reconstruction of rcc box culvert at km 0/6, 2/6 of chinnammapettai - bagasalai road (01-cridp-19-20-o- 1991) f) improvements to riding quality at km 0/0 - 3/820 of chinnammapettai - bagasalai road including upkeeping for a period of 60 months (01-cridp-19-20-i-3858) g) strengthening of tiruvalangadu - vedaiyur road km 4/750 - 8/0 including upkeeping for a period of 60 months (01-cridp-19-20-o-1971) h) improvements to riding quality at km 0/0 - 1/0 of mambakkamchattiram - mambakkam road including upkeeping for a period of 60 months (01-cridp-19-20-i-3844) i) improvements to riding quality at km0/0 - 3/930 of c.t.r. to mettupalayam (via) thomur - ramancheri road including upkeeping for a period of 60 months (01-cridp-19-20-i-3831) j) improvements to riding quality at km 0/0 - 6/8 of thandalam - perambakkam - thakkolam - arugilpadi road to pannur vayalur road including upkeeping for a period of 60 months (01-cridp-19-20-i-3851) k) improvements to riding quality at km0/0 - 1/2 of km 63/2 of thirumazhisai - uthukkottai road to atrambakkam road including upkeeping for a period of 60 months (01-cridp-19-20-i-3862)