The government is working on a greenfield expressway between Delhi and Mumbai which would have a new alignment and pass through less developed areas falling in the region, road transport and highways minister Nitin Gadkari said on Tuesday.Giving details of the work done by his ministry in the financial year just gone by, Gadkari said about 9,830 km of national highways were built at the cost of Rs 1.2 lakh crore.“Instead of expanding lanes of existing highways, we are focusing on creating greenfield ones as the cost of land acquisition is lesser for a greenfield project that passes through comparatively lesser developed areas.“The new alignment is being identified after which the cost will be decided,” the minister said. He said highway construction in the last fiscal exceeded that of the previous year by 20%.“In FY18, we constructed 27 km per day as against 22 km per day in FY17,” the minister said. “When our government came to power in 2014, the per day construction average was 11 km. The real achievement for us would be when we construct 40 km per day.”The ministry awarded highway construction contracts for 17,300 km in the last fiscal as against 15,848 km awarded in FY17. The minister said the highway construction target for the current financial year will be set in a high-level meeting on April 5.“We will be throwing open two expressway projects in and around Delhi in less than a fortnight. The Eastern Peripheral Expressway, which will act as a ring road for Delhi and the Delhi-UP Gate section, and the Delhi-Meerut Expressway will soon be inaugurated by the prime minister,” he said.The minister also announced that the daily road construction target from this year on will be calculated as per the lane km formula practised worldwide instead of the linear length km."World over, road construction is calculated as per the lane formula. Whereas, we calculate the linear length in India.“That means if we construct 10 km of 14 lanes and 10 km of two lanes, it is counted only as 10 km and the length of all lanes is not taken into account. The new formula will be worked out by the National Highways Authority of India ,” he added.