Little Saw Mill Run Railroad
| Overview | |
|---|---|
| Locale | Allegheny County, Pennsylvania |
| Dates of operation | 1853–1897 |
| Predecessor | horse-drawn tramway designed by Abraham Kirkpatrick Lewis (Kirk Lewis). |
| Successor | West Side Belt Railroad |
| Technical | |
| Track gauge | 4 ft 8+1⁄2 in (1,435 mm) standard gauge |
| Length | 21 miles |
The Little Saw Mill Run Railroad was a 4 ft 8+1⁄2 in (1,435 mm) standard gauge American coal railroad that was located in Allegheny County, Pennsylvania.