The Department of Road (DoR) has already started working out on its design after carrying out a preliminary survey.
"The upgradation task of the Birgunj-Pathlaiya road is moving ahead at a great speed and will be finished by the end of this fiscal year," said DoR engineer and project head Rabindra Lal Das.
The six-lane road connecting Pathlaiya to Parwanipur in Birgjun, will cost around Rs 500 million.
The Birgunj-Pathlaiya road had been constructed 57 years ago.
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