In Kingsbury, US 4 and NY 149 head through an open area dotted with farms and ponds. The routes proceed southward to a junction known as Baldwin Corner, where US 4 and NY 149 split. While US 4 heads to the southeast, NY 149 continues due south, paralleling the Champlain Canal to an area known as Smith's Basin. Here, NY 149 turns east and crosses both a railroad line and the canal—which NY 149 had been following since joining US 4 in downtown Fort Ann—to enter the town of Hartford. Here, the route winds its way eastward through a rural, mostly undeveloped area of Washington County as it intersects several county roads on its way to the hamlet of Hartford.