A bypass in Langrud, Gilan with a length of 11 km is under construction. Once completed, it will be incorporated as part of this route.[4]
Nur and Royan Bypass
A bypass around Nur and Royan, Mazandaran Province with plans to be extended to bypass Izadshahr as well is under construction. The length is to be 35km. Once completed, it will be incorporated as part of this route.[5]
Mahmudabad Bypass
A bypass in Mahmudabad, Mazandaran with a length of 12.6 km is under construction. Once completed, 6 km of it will be incorporated as part of this route.[6]
Babol Southern Bypass
Babol Southern Bypass Expressway in Babol, Mazandaran with a length of 16 km is under construction. Once completed, it will be incorporated as part of this route.
Twinning plans
There is an ongoing construction project to twin the section in between Gorgan-Bojnurd with a total length of 300 km. Some parts of it are already operational.[7]
