With a total length of 531 kilometers, the highway N-50 is a remarkable highway connecting Quetta, the capital of Baluchistan, to the Punjab province to the north and Islamabad. The Muslim Bagh-Qila Saifullah section of the road is 50 kilometer-long and the construction was undertaken by Limak-ZKB joint venture. The project, which is funded by Asian Development Bank ( 79%), was commenced on April 7, 2007. The final acceptance of the completed project was made on September 23, 2009.

The width of the road, which is planned to be constructed single-lane (single-transportation), is totally 13,3 meters with 2x3.65 m (transportation road) + 2x3.00m (banquettes). The superstructure of the highway is hot mixture coated. An overall amount of 1.016.729 m3 earth-moving consisting of 77.553 m3 cut excavation, 939.176 m3 borrow excavation was realized during the project. 315.591 m3 all-in sub base, 133.716 m3 foundation, 29.284 m3 binder, 20.068 m3 abrasive and 241.730 m3 surface dressing for the banquettes. 224 culverts were constructed at various kilometers. 34.348 m3 concrete was used for substructure in the scope of the project.