Puerto Rico Highway 191

PR-191 follows a north–south path through El Yunque National Forest and the Sierra de Luquillo and is divided into two non-contiguous sections.^[4]

• 
  Puerto Rico Highway 191 signs
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  The route of PR-191 through El Yunque National Forest

The highway begins at PR-955 in the community of Palmer in the municipality of Río Grande. From there, it climbs into El Yunque National Forest 4 km from its beginning. Inside the forest, the road is concurrent with Forest Highway 191 and many of the forest's major attractions are along the route. At 7.8 km is the Las Cabezas Observation Point and at 8.1 km is La Coca Falls where an access gate prevent traffic on PR-191 beyond that point from 6:00 PM to 7:30 AM. The route continues past the Yokahu Tower (8.8 km) and Baño Grande, Baño de Oro, and an information center (11.7-11.9 km). The road is closed to public traffic through part of the forest starting at a point 13.1 km from the beginning in Palmer and immediately past PR-191's second junction with PR-9938 (which is signed "Ramal 938") and just before a junction with Forest Route 10 and near the Mount Britton and El Yunque Peak trailhead.

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  PR-191 at the entrance to El Yunque National Forest (southbound)
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  PR-191 1 km south of the terminus of the northern section (northbound)
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  Terminus of the northern section of PR-191 (southbound)

The highway continues south out of El Yunque National Forest passing the village of Florida and ending again at PR-31, near Río Blanco in the municipality of Naguabo.

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  The beginning of PR-191 in Palmer at PR-955 (facing south)
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  The beginning of PR-191 in Palmer at PR-955 (facing north)

Municipality	Location	km[1][2]	mi	Destinations	Notes
Naguabo	Río Blanco	0.0	0.0	PR-31 – Naguabo, Juncos	Southern terminus of PR-191
		2.7	1.7	PR-969 – Maizales
		9.4– 9.5	5.8– 5.9	El Yunque National Forest southern boundary
		10.8	6.7	Northern terminus of southern segment at Río Sabana Recreation Area; dead end road
Gap in route
Río Grande	Mameyes II	13.2	8.2	PR-9938 – El Yunque National Forest	Southern terminus of northern segment; one-way street
		13.1	8.1	PR-930 – El Yunque National Forest	Closed
		12.7	7.9	PR-9938 – El Yunque National Forest	One-way street
		12.4	7.7	PR-930 – El Yunque National Forest	Closed
		6.6	4.1	PR-9966 – Jiménez
		4.4	2.7	PR-988 – El Yunque National Forest
		4.2	2.6	El Yunque National Forest northern boundary
		4.0	2.5	PR-990 – Mameyes II
		2.5– 2.4	1.6– 1.5	PR-961 – Mameyes II
		0.3– 0.2	0.19– 0.12	PR-955 – Río Grande, San Juan, Luquillo
		0.0	0.0	PR-3 – Río Grande, San Juan, Luquillo	Northern terminus of PR-191
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Closed/former

• Forest highway
• 1953 Puerto Rico highway renumbering

• El Yunque National Forest Brochure and Map. October 2007.