The construction covers several key areas, tunnel pipe shed, advance exploration, coring, system anchors, lock-foot anchors, drainage holes, slope anchor cables and blasting holes. Due to the complex geological conditions in the area, the construction team faced many technical challenges. The project adopted a variety of advanced construction techniques, mainly pipe construction and spiral drilling. These techniques can effectively cope with the changes in different soil layers and ensure the accuracy and safety of construction.

During the construction process, the team continuously optimized the process to ensure that various tasks were completed on time. The smooth progress of the project not only improved Colombia's transportation infrastructure, but also provided strong support for local economic development and social progress. With the completion of the Mar Highway, it is expected to significantly improve regional transportation conditions, promote the growth of trade and tourism, and lay a solid foundation for Colombia's future development.