The works on the Main Gas Pipeline were realized in two sections: the section Serbia and the section Bulgaria. The section Serbia included works from the border of Bulgaria to the border of Hungary, while the works on the section Bulgaria referred to the expansion of the infrastructure of „Bulgartransgaz“ EAD for gas transmission parallel to the northern (main) gas pipeline to the Bulgarian-Serbian border.

Within the project, the following works were performed: clearing the terrain, drilling and blasting work with the transport of materials, construction of permanent and temporary access roads, a set of earthworks, and optics.