The dual elevated Eastern Cross Taxiways and the fourth runway at the Indira Gandhi International Airport (IGIA) will be operational from July 13, a senior official said.
Delhi airport currently has three runways.
IGIA is operated by Delhi International Airport Ltd (DIAL), a consortium led by GMR Airports Infrastructure Ltd.
All about the Eastern Cross Taxiways (ECT)
The Eastern Cross Taxiways (ECT) is expected to reduce the distance an aircraft has to cover after landing on the third runway and going to Terminal 1 to 2 kilometres from 9 kilometres now.
These elevated taxiways are capable of handling big planes, including A-380 and B-777 and they will also help to curtail the annual CO2 emissions by 55,000 tonnes, according to an official statement.
The ECT is 2.1 kilometres long and around 202 metres wide.
There are two taxiways, one for planes to use after landing and another for aircraft to use before taking off.
The ECT will be the first of its kind in India.