Mexico's President Felipe Calderon has opened works on three highways and one bridge in Colima state capital Manzanillo, the presidential website reported.
Work has begun on highways Chandiablo, Paseo de Gaviotas and Los Buhos, as well as the Punta de Agua bridge, all of which will require a total investment of 300mn pesos (US$24.8mn).
The projects aim to ease traffic in the area, which is home to Manzanillo port, the largest in Mexico's central and southern area.
"Manzanillo is a center of contact with the most important developing markets in the world, such as China, India, Korea and Japan, and this kind of project strengthens the area's capacity to interact with the global market," Calderon said.
The projects are part of Manzanillo's 28bn-peso integration project, which includes a rail bypass, the expansion of the port's access channel and several highway projects.