Directory of Class III and regional railroads in the United States
670
Total Railroads
657
Short Lines
45
States
6
Class I
7
Class II
657
Short Line
670 railroads
| Mark | Railroad Name | Class | State(s) |
|---|---|---|---|
| RJCW | R.J. Corman Railroad/Western Ohio Lines | Short Line | |
| RR | Rainer Rail | Short Line | |
| RFCC | Raleigh and Fayetteville Railroad | Short Line | |
| RCPE | Rapid City, Pierre and Eastern Railroad | Short Line | |
| RCRY | Raritan Central Railway | Short Line | |
| RHSL | Rawhide Short Line | Short Line | |
| RBMN | Reading Blue Mountain and Northern Railroad | Short Line | |
| RRVW | Red River Valley and Western Railroad | Short Line | |
| NTRY | Republic N&T Railroad | Short Line | |
| RSL | Republic Short Line | Short Line | |
| RSOR | Riceboro Southern Railway | Short Line | |
| RPRC | Richmond Pacific Railroad | Short Line | |
| RWRR | Ringneck and Western Railroad | Short Line | |
| RVSC | Rio Valley Switching Company | Short Line | |
| RNAB | Ripley & New Albany Railroad | Short Line | |
| RRR | River Ridge Railroad | Short Line | |
| RVPR | Riverport Railroad | Short Line | |
| RER | Rochester and Erie Railroad | Short Line | |
| RSR | Rochester and Southern Railroad | Short Line | |
| RSS | Rochester Switching Services | Short Line | |
| RRRR | Rock & Rail LLC | Short Line | |
| RVT | Rogue Valley Terminal Railroad Corporation | Short Line | |
| SLGG | S&L Railroad | Short Line | |
| SRN | Sabine River and Northern Railroad | Short Line | |
| SSRR | Sacramento Southern Railroad | Short Line | |
| SAV | Sacramento Valley Railroad | Short Line | |
| SLGW | Salt Lake, Garfield and Western Railway | Short Line | |
| SAC | San Antonio Central Railroad | Short Line | |
| SDIY | San Diego and Imperial Valley Railroad | Short Line | |
| SFBR | San Francisco Bay Railway | Short Line | |
| SJVR | San Joaquin Valley Railroad | Short Line | |
| SLC | San Luis Central Railroad | Short Line | |
| SMA | San Manuel Arizona Railroad | Short Line | |
| SPVR | San Pedro Valley Railroad | Short Line | |
| SS | Sand Springs Railway | Short Line | |
| SAN | Sandersville Railroad | Short Line | |
| SCBG | Santa Cruz, Big Trees and Pacific Railway | Short Line | |
| SMV | Santa Maria Valley Railroad | Short Line | |
| STSR | Santa Teresa Southern Railroad | Short Line | |
| SBG | Savage Bingham and Garfield Railroad | Short Line | |
| SVGX | Savage Tooele Railroad | Short Line | |
| SVHO | Savannah and Old Fort Railroad | Short Line | |
| SIT | Savannah Industrial Transportation | Short Line | |
| SAPT | Savannah Port Terminal Railroad | Short Line | |
| SVTX | Seaview Railroad | Short Line | |
| SGLR | Seminole Gulf Railway | Short Line | |
| SE | SEMO Port Railroad | Short Line | |
| SQSC | Sequatchie Valley Switching Company | Short Line | |
| SVRR | Shamokin Valley Railroad | Short Line | |
| SV | Shenandoah Valley Railroad | Short Line |
Source: Wikipedia "List of United States railroads". 670 railroads indexed.