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Freeway 3, or more commonly known as Tehran-Shomal Freeway (Persian: آزادراه تهران - شمال; literally: Tehran-North Freeway) or Tehran-Chalus Freeway[2] will be a freeway in NorthernIran, connecting Tehran to cities of western Mazandaran. Currently, sections 1, 2 & 4 are in service and section 3 is under construction. The freeway runs parallel to Road 59, the old road connecting Karaj to Chalus.
Section 1
This section is from interchange with Azadegan Expressway and Hemmat Expressway in northwestern Tehran city (Municipality District 21) to Doab, Shahrestanak, Alborz Province. This section opened for test service on February 12, 2020, and officially opened on February 25, 2020.[3] The section is 32 km long, with 28 tunnels having an overall length of 28.4 km on both sides.[4] The longest tunnel is Talun Tunnel which is 4870 m long.[4]
