Road users will have to suffer this "extra burden" due to NHAI fixing longer concession periods for private operators to collect toll.
Besides, the special purpose vehicle created by Anil Ambani-led group's Reliance Infra was found to have diverted a part of the toll funds to invest in Reliance's own mutual fund.
The CAG in its report submitted in Parliament today said NHAI also gave undue benefits to Reliance Infra SPV for six-laning of a National Highway project as an important clause was 'deleted' from the agreement. The company termed the allegations as "baseless and devoid of any facts".
In Delhi-Agra project, an important clause in 6-laning concession agreements for withholding the toll collection in case of failure to achieve milestones was deleted.
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"By the end of August 2013, concessionaire (R-Infra SPV) had collected toll amounting to Rs 120 crore and utilised an amount of Rs 78.32 crore in investment in liquid funds," the report said.
Reliance Infra had formed an SPV in the name of DA Toll Road Private Ltd to collect toll from October 16, 2012.
The amounts invested in liquid mutual funds at any given point of time were Rs. 3 to 5 crore, and not the inflated figures alleged in the CAG report, and the same do not represent any "diversion" of funds, as the MF accounts were of the SPVs themselves, he added.
An L&T spokesperson refused to comment, while no comments could be sought from IRB Infrastructure.