Monterrey Metro Line 3 faces cost escalation and delayed opening July 28, 2015 | Latin America Finance The state government of Nuevo Leon in Mexico has announced that the construction cost of Monterrey Metro Line 3 has escalated by 41 per cent from MXN5.7 billion to MXN8.03 billion and opening has been... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password