The PatnaâÂÂSonepurâÂÂHajipur section is a railway line connecting Patna to Hajipur in the Indian state of Bihar. The line passes through the DighaâÂÂSonpur railâÂÂroad bridge, connecting South Bihar and North Bihar, and the Gangetic Plain in Bihar. The electrification work in PatnaâÂÂSonepurâÂÂHajipur section was completed by July 2016.