sub work for the construction of concrete laboratory-ii at thanjavur in the main work of area based - comprehensive road improvements, strengthening and maintenance is state highways and major district roads for a length of 253.877 km in pattukottai and peravurani sub divisions of thanjavur ( h ) c&m division including initial rectification works such as improvements and widening form intermediate lane to double lane, double lane to multi lane / four lane, improvements ofroads including widening of minor bridges and slab culverts, construction of pre cast box culverts, rcc and pcc storm water drain, retaining wall, crash barrier type rcc centre medians, road safety measures to allroads, plantation of avenue trees including upkeeping for a period of 60 months.