Bolu Mountain Tunnel is closed due to cleaning 16 October: Bolu Mountain Tunnel will be done on Thursdays due to the cleaning work between 23.00 and 07.00 will be closed between the transport.
Side road and dome cleaning work will be done at night at Bolu Mountain Tunnel at TEM. Today, due to the clean-up operation between 23.00 and 07.00 hours, Ankara direction will be closed to the transportation, and the vehicles will be directed from the Kaynaşlı tolls D-100 highway Bolu Mountain crossing. Tomorrow and Thursday in Istanbul direction between 23.00 and 07.00 will be closed between the same work will be done. The vehicles going to Istanbul will be directed to the crossing of Bolu Mountain from the Abant tolls D-100.