The NBSR St. Stephen Sub provides New Brunswick Southern Railway access to businesses on both sides of the international border near St. Stephen. The subdivision itself does not cross the border, but connects with the Milltown Spur which in turn connects with the Woodland Spur on the American side of the border.
| Station Name | Mile |
|---|---|
| McAdam JCT with NBSR McAdam Sub JCT with NBSR Mattawamkeag Sub Yard, Wye |
0.0 |
| Watt | 14.8 |
| Milltown Spur west 4.6 miles to Woodland Spur | 32.7 |
| Milltown JCT | 32.8 |
| End of Track | 33.2 |

