National Highways Authority of India (NHAI) has invited proposal from the eligible consultants for Authority Engineer Services for Construction of Flyover/ Underpass for improvement of existing junctions at IFFCO Chowk at Km. 28.211, Signature Chowk at Km. 29.650 and Rajiv Chowk at Km. 33.180 on Delhi – Gurgaon Access Controlled section on NH-8 in the State of Haryana on the basis of International Competitive bidding.