The Indian state of Karnataka is seeking a Rs4,000 crore ($831m) loan from the Asian Development Bank (ADB) to upgrade its road network.

The money will be used to revamp 2,600km of road networks in the state.

The loan, if granted, will be given for a 21-year period. The repayment will start from the eighth year with no interest for the first seven years.

ADB has also shown interest in giving the loan but has not yet decided the final amount.

The loan is expected to be given in 2010-11, according to state officials.