Northernmost point on the line. Line turns south-southeast along the Olyokma River. Enter Amur basin. 2364: Tynda. Tynda to Komsomolsk 1473 km: 2364: Tynda: Branch railway and highway north to Yakutsk, little BAM south to the Trans-Siberian. 2704: Bridge over Zeya Reservoir. Line heads southeast. 3205: Bureya River bridge. 3315: Novy Urgal: Branch south to Trans-Siberian. 3403: east to Dusse-Alin Tunnel. Northeast up the Amgun River. 3633: Postyshevo: east. 3697: Evoron Lake. southeast to 3837: Komsomolsk-on-Amur. Komsomolsk to Sovetskaya Gavan 486 km. This section was completed by prisoners during World War II, except for the 19 km section east of Komsomolsk which was completed in 1974. Komsomolsk. 1734m Amur River Bridge. 0: Pivan (new numbering system). 51: Selikhin: Branch. 95–340: Sikhote Alin Mountains. 403: Mongokhto 441: Vanino: port, train ferry to Sakhalin Island, practical end of passenger service. 467: Sovetskaya Gavan: naval base. In April 2008 the state-owned Bamtonnelstroy corporation started work on the new 3.91 km single-track Kuznetsovsky Tunnel to bypass an older tunnel built in 1943–1945. It was opened in December 2012. The old tunnel had difficult gradients; building the new tunnel relieved a bottleneck on the BAM. The 59.8 bn roubles (about $1.93 bn) project included 20 km of new track. In 2010, Yakunin had said, the stretch between Komsomolsk and Sovetskaya Gavan was the weakest link on the BAM, which, he said, could be carrying 100 million tons of freight a year in 2050. Running approximately alongside the railway track is the BAM road, a railway service track. It is said to be in a very poor state, with collapsed bridges, dangerous river crossings, severe potholes and "unrelenting energy-sapping bogs". The road is passable only by the most extreme off-road vehicles and adventure motorcycles.