National Highway 731 (NH 731) is a National Highway entirely located within Uttar Pradesh, India. It is a long spur route of NH 31 that links Saidpur to Palia Kalan via Lucknow. At its terminus in Palia Kalan, it continues as SH 90 towards the Nepal border at Gauriphanta where it links up with Nepal's NH 05. Its section between Lucknow and Saidpur roughly parallels that of the Purvanchal Expressway.
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