Russia and North Korea are close to completing a bridge that will form the first road link ever built between them, amid concerns the two increasingly close allies are creating infrastructure to boost military cooperation in the Ukraine war, The Guardian reported on Monday.The bridge spans the Tumen River between Khasan in Russia’s far east and Tumangang in North Korea, a remote stretch of borderland where the river marks the final miles of the frontier before reaching the coast.JOIN US ON TELEGRAMFollow our coverage of the war on the @Kyivpost_official.The bridge is about 1 km (0.6 miles) long and 7 meters (23 feet) wide, with two lanes, part of a wider 4.7 km (2.9 miles) crossing that includes approach roads.Satellite imagery shows supporting infrastructure being built on the Russian side, including a helicopter landing pad.North Korea finished its side of the project, including customs and quarantine facilities, ahead of a planned opening on June 19, but Russia has fallen behind on its own side of the border, and no new opening date has been confirmed.Investigation argues bridge is military corridorA new investigation by Ukrainian human rights group Truth Hounds, shared with The Guardian, suggests the bridge is intended to provide a discreet military logistics corridor rather than boost trade.Nazar Myhun, who led the open-source research at Truth Hounds, said a key reason behind its conclusion was that it is much easier to evade satellite monitoring by using roads compared with rail networks.