Puerto Rico Highway 39, or PR-39, is an urban road in Santurce.
Map of PR-39, San Juan, 00907, Puerto Rico
This is a short road that connects from the PR-1 (Expreso Luis Muñoz Rivera) to PR-26 (Expreso Román Baldorioty de Castro) and is parallel to PR-2. This road intersects with PR-35 (Avenida Manuel Fernández Juncos) and PR-25 (Avenida Juan Ponce de León). This road is called Calle Cerra.
References
Puerto Rico Highway 39 Wikipedia(Text) CC BY-SA