The state government and contractor Mota Engil presented two emergency repair proposals for the rainwater pipeline damaged during the construction of Monterrey's Line 4 metro. However, Mayor Adrián de la Garza rejected both options, deeming them structurally unviable. The first proposal was to modify the existing pipeline to bypass the monorail columns, but this solution cannot have sharp bends. The second rejected proposal was for an alternate pipeline on the Santa Catarina River slope, but it is considered unstable and could be washed away by strong water surges. The mayor emphasized that due to the damaged pipeline, the area will always suffer from leaks that cause sinkholes and damage to the monorail columns. His team proposes building a new parallel pipeline that is completely independent of the damaged one. De la Garza added that their proposal would be accredited by engineering institutes and involve Conagua. The mayor expressed concern that constant leaks could eventually lead to structural overloading or settlement that could damage the metro's supporting structures and make them unusable. The city is preparing its own solution but will give the state until the end of November to intervene properly. "We are very advanced, we have already notified the state and the construction company. We are waiting for their proposal, which they had until the last day of this month, that was the agreement," the mayor stated. "We are preparing a proposal to fix it quickly, without delays. It's a serious issue, there are human lives under our responsibility."
