As part of an ambitious modernization project, at the end of 2009, CGAL joined in the work for the development and construction of port megaproject of the Cuyutlán Lagoon second basin in Manzanillo, Colima.

Its participation consisted in the construction of the railway bypass at the second basin, with the purpose of detouring the railroad track that passed over the Campos sandbar canal, sole access to the Port of Manzanillo. The length of the bypass was of 7.89 mi, having to border the second basin at a point between the Armería-Manzanillo Freeway and the Tepalcates Canal, and ending at the northern end to connect with the currently operating track at the Manzanillo yard.

Construction took place almost totally within the lakebed with water stress; 1 226 pilings and 306 supports were rammed on site, of which only 9% were over dry land, in the Punta Grande and Tepalcates areas. The technical solution included a series of elevated roadways with a length of 5.59 mi and 2.05 mi of cuts and embankments on dry land, where it was necessary to build a 1 312.3 ft false railway tunnel due to the instability of the slopes. The process required 4 398 759.57 ft3 of concrete and 24 361.17 t of reinforcing steel. A volume of 14 867 474.69 ft3 was dredged.

Finally, the construction of the several works will attaine the following objectives: a reduction of pollution resulting from the consumption of fossil fuels for power generation at the Campos thermoelectrical plant, avoid the interference of the railroad with the vehicles that circulate over downtown Manzanillo, and having a highway bypass to connect the Campos sandbar, which will detonate its development.