Puerto Rico Highway 156 is a long east–west highway which connects Caguas to Orocovis and is the main artery to Aguas Buenas since the highway from Puerto Rico Highway 52 to the main downtown has at least two lanes and a shoulder per direction. From Aguas Buenas to Orocovis it is a rural, yet safe road which enters all the business districts and plazas of Aguas Buenas, Comerío, Barranquitas and Orocovis. It is the one of two long east–west highways through the center of the island (the other being Puerto Rico Highway 111) but it does never approach a coast (Puerto Rico Highway 111 approaches Aguadilla's shore near PR-2 but PR-156, ending in Caguas, is near 35 kilometers away from the east coast).
Map of PR-156, Puerto Rico
References
Puerto Rico Highway 156 Wikipedia(Text) CC BY-SA