Bangalore International Airport (BIAL) is located in Devanahalli, 34 KM from CBD on NH-07. Due to the rapid growth of its IT sector, Bengaluru needed a world class airport for its customers, so the government of Karanataka planned to build new airport at Devanahalli.
It was necessary to build a Trumpet interchange to provide access for vehicles commuting from Bengaluru as well as Hyderabad to cross NH-07. Apart from major road like NH-07, an additional Road Over Bridge (ROB) and a Vehicular Underpass (VUP) needed to be built.
BIAL awarded the project to L&T Ltd. The Trumpet interchange had a major flyover merged with ROB, two ROBs and a VUP to provide signal free access for vehicles from both Bengaluru and Hyderabad, without affecting entry for adjacent villages.