The materials that he used in constructing the Metro stations are all durable. The National Capital Transportation Agency was created by the federal government in 1960. The purpose of this transportation agency is to exploit a quick rail system. The system was being transferred to WMATA or also known as Washington Metropolitan Area Transit Authority. The 158 km regional system was the approved plans of WMATA in 1968. By the following year, the construction started and on December 9 1969, the groundbreaking happened. On March 27, 1976, the system started its operation. They had 5 stations and all stations were in the District of Columbia. These are from Rhode Island Avenue to Farragut North. The system has reached Maryland, Montgomery Country, Fairfax Country, and George’s Country.