Puerto Rico | highway | state highway | Princes Highway | Alaska Highway | Trans-Canada Highway | Mayagüez, Puerto Rico | University of Puerto Rico | Jefferson Highway | Puerto Rican people | New Zealand State Highway 1 | Highway to Heaven | Santurce, San Juan, Puerto Rico | Puerto Plata | Supreme Court of Puerto Rico | Ponce, Puerto Rico | Mexican Federal Highway | Federal Highway Administration | Río Piedras, Puerto Rico | California Highway Patrol | Puerto Vallarta | Puerto Cortés | New Zealand State Highway 6 | Minnesota State Highway 55 | Lincoln Highway | Stuart Highway | Hume Highway | Federal Highway | Controlled-access highway | Pacific Highway |
Puerto Rico Highway 172 is a main highway that connects Caguas, Puerto Rico at PR-1 to downtown Cidra, Puerto Rico and continues its way to its end at Puerto Rico Road 156 in Comerio, Puerto Rico.