Monongahela Connecting Railroad
| Overview | |
|---|---|
| Locale | Allegheny County, Pennsylvania, U.S. |
| Dates of operation | 1885–2002 |
| Technical | |
| Track gauge | 4 ft 8+1⁄2 in (1,435 mm) standard gauge |
The Monongahela Connecting Railroad (reporting mark MCRR) or Mon Conn was a three-mile industrial railroad line in Pittsburgh, Pennsylvania. It was a subsidiary of the Jones & Laughlin Steel Company and a large portion of its work was for its parent company, though it also served other industries along the line.