autopista 30 de mayo ("english for" highway 30 may) is a highway in the dominican republic. the highway serves as a junction of the capital santo domingo, dominican republic and its adjacent city (part of the metropolitan area), san cristóbal. it is a small highway, usually with heavy traffic, and passes through the haina port, the biggest port in the dominican republic. the eastern terminus is at the george washington avenue in the city coast and the western terminus lies at the city center of san cristobal and then unites to the new section of dr-2 in the western part of san cristobal.