In this area, unlike its parallel Expreso, it is not composed of tunnels but instead only by long express viaducts and at ground a three-lane local service road.

The Corridor does not cross the Ozama River, because it begins after that but is connected to Santo Domingo Este by the Avenue Quinto Centenario/San Vicente de Paul.

The highway exits Santo Domingo Oeste and is renamed to Autopista Juan Pablo Duarte in honor of the founding father.

On its run it connects Santo Domingo to the suburb Pedro Brand located about 20 kilometers away from the city-center and then goes northwest into the outskirts of Villa Altagracia.

Father northward almost reaching La Vega DR-1 intersects DR-19 which is the main roadway that leads to the major city of San Francisco de Macorís.

After the interruption In Santiago de los Caballeros, the highway is renamed again for a third time as Autopista Joaquín Balaguer in honor of the former Dominican president.

It runs 25 km to Villa Bisonó where it serves as an important junction to DR-5 which connects to the cities of Puerto Plata Province and the northern coast.