Freeway 3, or more commonly known as Tehran-Shomal Freeway (; literally: ''Tehran-North Freeway'') or Tehran-Chalus Freeway will be a freeway in Northern

Iran Iran, officially the Islamic Republic of Iran (IRI) and also known as Persia, is a country in West Asia. It borders Iraq to the west, Turkey, Azerbaijan, and Armenia to the northwest, the Caspian Sea to the north, Turkmenistan to the nort ...

, connecting

Tehran Tehran (; , ''Tehrân'') is the capital and largest city of Iran. It is the capital of Tehran province, and the administrative center for Tehran County and its Central District (Tehran County), Central District. With a population of around 9. ...

to cities of western

Mazandaran Mazandaran Province (; ) is one of the 31 provinces of Iran. Its capital is the city of Sari, Iran, Sari. Located along the southern coast of the Caspian Sea and in the adjacent Central Alborz mountain range and Hyrcanian forests, it is border ...

. 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 Karaj (; ) is a List of cities in Iran by province, city in the Central District (Karaj County), Central District of Karaj County, Alborz province, Alborz province, Iran, serving as capital of the province, the county, and the district. Earl ...

to Chalus.

Section 1

This section is from interchange with Azadegan Expressway and

Hemmat Expressway Hemmat Expressway is a route in Tehran, Iran. It starts from Pasdaran Avenue junction and goes towards west. It passes Haghani Expressway, Kordestan Expressway, Milad Tower The Milad Tower (, ) (lit. Birth Tower), also known as the Tehran ...

in northwestern

city (Municipality District 21) to Doab, Shahrestanak,

Alborz Province Alborz province () is one of the 31 provinces of Iran. Its capital is the city of Karaj, which lies 10 km west of Tehran, at the foothills of the Alborz mountains. Alborz is Iran's smallest province in area. History In 2010, Karaj ...

. This section opened for test service on February 12, 2020, and officially opened on February 25, 2020. The section is 32 km long, with 28 tunnels having an overall length of 28.4 km on both sides.مناطق عملیاتی
The longest tunnel is Talun Tunnel which is 4870 m long.

Sections 2 and 3

Section 2 is from Doab, Shahrestanak,

Alborz The Alborz ( ) range, also spelled as Alburz, Elburz or Elborz, is a mountain range in northern Iran that stretches from the border of Azerbaijan along the western and entire southern coast of the Caspian Sea and finally runs northeast and merge ...

to Pol-e Zanguleh, Kelardasht District,

Mazandaran Province Mazandaran Province (; ) is one of the 31 provinces of Iran. Its capital is the city of Sari. Located along the southern coast of the Caspian Sea and in the adjacent Central Alborz mountain range and Hyrcanian forests, it is bordered clockw ...

. The total length is 25 km. The section has 20 tunnels with overall length of 24.2 km. The longest tunnel is Alborz Tunnel with a length of 6378 m. Section 3 is from Pol-e Zanguleh, Kelardasht District,

to Marzan Abad, Kelardasht District,

with a length of 46 km. This section will have 92 tunnels with overall length of 33.5 km. Section 2 was completed in 2023, but Section 3 is still under construction.

Section 4

Section 4 is from Marzan Abad, Kelardasht District,

to Chalus. This section is 20 km long. It has 4 tunnels with an overall length of 1400 m. This section was opened in March 2013.علاقمندی اتریش برای مشارکت در توسعه زیرساخت‌های حمل و نقل ایران
/ref>

Direction

References

Iran Road Maintenance & Transportation Organization

Road management center of Iran

Ministry of Roads & Urban Development of Iran
{{Transportation in Iran Freeways in Iran Transport in Tehran Transportation in Tehran province