[1] The northern terminus of the parkway is at a junction with River Street, north of the Readville neighborhood of Boston and just south of the Mill Pond Reservation, a city park.

It runs roughly east, as a two-lane road, until it meets a major railroad right-of-way, at which point it turns south.

It makes a left turn to cross the railroad with Milton Street on the John Hart Bridge (a 1930s WPA construction), just north of the Readville MBTA station.

It turns south, passing the station and then curves east again, crossing another branch of the railroad to enter Wolcott Square, a commercial area of Readville.

From Wolcott Square it proceeds roughly southeast in a straight line, through a residential area, and widens to four lanes shortly before reaching the edge of the Neponset River Reservation and a junction with the southern terminus of the Truman Parkway.