I saw and article which had this:
Does anyone see any significant road work being done from Navarrete to Puerto Plata and Sosua to Rio San Juan?Puerto Plata ? Navarrete. Forty-five kilometers of this important road, which connects these two important north coast towns, is currently being refurbished.
Sosua-Rio San Juan (Playa Grande). This important road connects the region with Puerto Plata?s international airport.