M-1.1 highway () is a Montenegrin roadway.
The M-1.1 highway is built to half of motorway standard. It is planned to become part of the Bar-Boljare motorway. The main part of this highway is the Sozina tunnel, which is 4,189 m long. It serves as bypass of the mountain range Paà ¡trovska Gora that separates the Montenegrin coast from the Zeta plain and Skadar Lake basin. The distance between Podgorica, the capital of Montenegro, and Bar's main port is shortened by approximately 25km. The M-1.1 highway is also part of the International E-roads.
Sozina tunnel was opened on 13 July 2005, which was also the day when this road was opened. In January 2016, the Ministry of Transport and Maritime Affairs published a bylaw on categorisation of state roads categorising this road as M-1.1.