widening and strengthening to government roads including construction of retaining wall and box culvert in lieu of existing piped causeway in attur ( h ) ( c&m ) sub division ( slm-7 ) the following works are involved1. widening from single lane to intermediate lane and strengthening at km 0 / 0 - 3 / 0 of puliyankurichi - noothapur road including construction of retaining wall at km.1 / 2 ( 01-cridp-23-24-p-1309 ) 2. construction of box culvert at km.7 / 8 of kattukottai - manivilundan road in lieu of existing piped causeway ( 01-cridp-23-24-o-0835 ) 3. construction of box culvert at km.1 / 4 of vadakumarai - punalvasal road in lieu of existing piped causeway ( 01-cridp-23-24-p-1306 )