They were forced to fix it or lose their concession. The SCT revealed publicly that the concessionaire was using 10 mm thick overlays to repair bad sections. Thanks for the update as last November the libre was in far better shape. I did time the last four or five trips on both roads and to the northern beach section of Mazatlan, the exit the free road was sixteen minutes slower. For just under twenty dollars? Another more expensive but worth it section of coast highway is between Cihuatlan and the entronque to Tecoman. The libre is simply awful.
The toll road between Rosarito and Otay Mesa is another section in poor shape. It has sharp bridge abutments, and rough cracked swales. But there are no worth-the-savings free alternatives.
https://mexiconewsdaily.com/news/durango-mazatlan-highway-repair-costs/