In 1989, Puerto Rico’s Department of Transportation and Public Works (DTPW) proposed to build a mass-transit system called Tren Urbano. This is Puerto Rico’s first mass transit project. Phase one of Tren Urbano is designed to bring a new mode of transportation to the most congested sections of the San Juan Metropolitan area. It will transport passengers in San Juan, capital of Puerto Rico, and the surrounding urban areas. The initial phase of Tren Urbano will serve three central municipalities of the SJMA, Bayamóón, Guaynabo, and San Juan. In 1996 the scheme was projected to cost an estimated $ billion, by 2002 the cost had risen to $ billion.