the Ambani brothers were considered to be unrealistic. A consortium of the Anil Dhirubhai Ambani Group company Reliance Energy (REL) and Hyundai Engineering & Construction quoted a concession period of nine years and 11 months against 75 years quoted by Mukesh Ambani's Sea King Infrastructure (the only other short-listed bidder left, after Larsen & Toubro-Gammon and IFFCO opted out). The REL-Hyundai consortium was initially disqualified at the technical bid stage as Hyundai did not meet the criteria of $200 million net worth specified in the bid document. However, the consortium challenged the disqualification in the Supreme Court, and the Court granted them 90 days to submit their bid that ended on 15 December 2007. The consortium eventually won the bid in February 2008. However, the MSRDC was not sure about viability of the low concession period. The MSRDC felt that the concession periods were "unrealistic" and that both bids "seemed frivolous in nature". Third attempt The Government of Maharashtra called for fresh bids for the project in 2008. However, none of the 13 companies that had shown interest submitted bids. The media criticized the political feud between the ruling Nationalist Congress Party (NCP) and Indian National Congress coalition, as being responsible for slowing "down the pace of Mumbai's development". The city's two infrastructure agencies, the MSRDC and the Mumbai Metropolitan Region Development Authority (MMRDA), under the NCP and Congress respectively, were both planning to construct the MTHL at the same time. The project underwent two failed rounds of tendering under the MSRDC, and was stuck for nearly two years (between 2009 and 2011), before the state government decided to hand over the mandate to MMRDA. Following the decision, the MSRDC asked MMRDA to pay if it wanted access to any of the studies on the project conducted by the former. After the MMRDA was tasked with executing the MTHL, the MSRDC took up the expansion of the Vashi Bridge by adding six more lanes to ease congestion at the entrance to Navi Mumbai. However, the MMRDA refused the MSRDC's request to allocate funds for the expansion of the Vashi Bridge, as the former believed that the expansion would divert some ridership from the MTHL. Fourth attempt The MMRDA appointed Arup Consultancy Engineers and KPMG to conduct the techno-economic feasibility study of the MTHL in August 2011. The MTHL project was proposed as a public-private-partnership (PPP) model. The project received clearance