Panji Poyon (Tajik: Панҷи Поён), also known since the times of the Soviet Union as Nizhny Panj (from Russian: Нижний Пяндж, Nizhniy Pyandzh) is a border checkpoint on the Tajik side of the Afghanistan-Tajikistan border. Both Tajik and Russian names mean literally "Lower Panj". It is the place of an Afghanistan-Tajikistan Bridge across the Panj River. At the opposite side of the river lies the Sherkhan Bandar of Kunduz Province, Afghanistan.
It is the last point on the European route E123.
The Afghanistan–Tajikistan border is 1,357 km (843 mi) in length and runs from the tripoint with Uzbekistan in the west to the tripoint with the Xinjiang region of China in the east, almost entirely along the Amu Darya, Pyanj and Pamir Rivers, except for the easternmost section along the Wakhan Corridor and divides the ethnic Tajik community into citizens of two separate countries.
The Tajikistan-Afghanistan bridge spanning the Panj River between Panji Poyon (or Nizhniy Pyandzh), Tajikistan and Sherkhan Bandar, Afghanistan was opened on 26 August 2007.The two-lane bridge is 672 metres (2,205 feet) long and 11.6 metres (38 feet) wide. It cost approximately $40 million, financed by the US Army Corps of Engineers and was designed and constructed by Italian company Rizzani de Eccher S.p.A.The Tajik President Emomali Rahmon and Afghan President Hamid Karzai were joined by US Secretary of Commerce Carlos Gutierrez at the opening ceremony.