 To its north, East Merrimack Street also runs east-west, but follows the contours of the Merrimack River, which lies to its north, until it bends south and ends at a junction with Andover Street in far eastern Lowell.At one stretch the two roads are sufficiently close to one another that there are single properties abutting both of them.The district extends along this piece of road, from Andover Street's junction with Nesmith Street to the Tewksbury line.