Bengaluru infrastructure updates: B-SMILE floats tenders for three new toll-free flyovers and elevated corridors across the city, estimated at Rs 1,320 crore, following the government approval of multiple major urban transport projects. Bengaluru: Bengaluru Smart Infrastructure Ltd (B-SMILE), an offshoot of the Greater Bengaluru Authority (GBA), has floated tenders to build three flyovers and elevated corridors across the city, estimated to cost Rs 1,320 crore..