Railroad Transportation Service Companies
| Grand Canyon Railway Inc (Flagstaff, AZ)
Primarily Serving: Scottsdale, AZ - Peoria, AZ - Surprise, AZ - Glendale, AZ |
| Grand Trunk Western Railroad (Battle Creek, MI)
Primarily Serving: Kalamazoo, MI - Lansing, MI - Wyoming, MI - Grand Rapids, MI |
| Great Walton Railroad Co Inc (Social Circle, GA)
Primarily Serving: Dacula, GA - Athens, GA - Atlanta, GA - Roswell, GA |
| Gulf Coast Rail (Sweetwater, TX)
Primarily Serving: Abilene, TX - San Angelo, TX - Midland, TX - Lubbock, TX |
| Hampton & Branchville Railway (Hampton, SC)
Primarily Serving: Savannah, GA - North Charleston, SC - Charleston, SC - Augusta, GA |
| Hampton & Branchville Rr Co (Hampton, SC)
Primarily Serving: Savannah, GA - North Charleston, SC - Charleston, SC - Augusta, GA |
| Hawkins Freight Svc (Butte, MT)
Primarily Serving: Missoula, MT - Great Falls, MT - Idaho Falls, ID - Billings, MT |
| Huron & Eastern Railway (Vassar, MI)
Primarily Serving: Saginaw, MI - Flint, MI - Waterford, MI - Pontiac, MI |
| I & C Conerail Caboose (Cresson, PA)
Primarily Serving: Pittsburgh, PA - Charles Town, WV - Frederick, MD - Germantown, MD |
| I & M Rail Link (Wells, MN)
Primarily Serving: Lakeville, MN - Rochester, MN - Burnsville, MN - Eden Prairie, MN |
| I C & E Railroad (Calmar, IA)
Primarily Serving: Waterloo, IA - La Crosse, WI - Rochester, MN - Dubuque, IA |
| I C & E Railroad (East Moline, IL)
Primarily Serving: Davenport, IA - Iowa City, IA - Peoria, IL - Dubuque, IA |
| Ic & E Railroad (Ottumwa, IA)
Primarily Serving: Iowa City, IA - Des Moines, IA - Cedar Rapids, IA - West Des Moines, IA |
| Idaho Northern & Pacific (La Grande, OR)
Primarily Serving: Kennewick, WA - Pasco, WA - Nampa, ID - Meridian, ID |
| Idaho Northern & Pacific Rr (Emmett, ID)
Primarily Serving: Meridian, ID - Nampa, ID - Boise, ID - Paradise Valley, NV |
| Idaho Northern Pacific Rr Co (Nampa, ID)
Primarily Serving: Meridian, ID - Boise, ID - Paradise Valley, NV - Pocatello, ID |
| Illinois & Midland Railroad (Pekin, IL)
Primarily Serving: Peoria, IL - Bloomington, IL - Normal, IL - Springfield, IL |
| Illinois Central Railroad Co (Gilman, IL)
Primarily Serving: Champaign, IL - Joliet, IL - Normal, IL - Tinley Park, IL |
| Illinois Central Rr Depot (Saint Ansgar, IA)
Primarily Serving: Rochester, MN - Waterloo, IA - Lakeville, MN - La Crosse, WI |
| Illinois Western Railroad (Vandalia, IL)
Primarily Serving: Saint Louis, MO - Florissant, MO - Decatur, IL - Springfield, IL |
| Independent Locomotive Svc (Thief River Fall, MN) |
| Indiana & Ohio Railroad (Saint Paris, OH)
Primarily Serving: Springfield, OH - Dayton, OH - Middletown, OH - Columbus, OH |
| Indiana Railroad Co (Switz City, IN)
Primarily Serving: Bloomington, IN - Terre Haute, IN - Indianapolis, IN - Evansville, IN |
| Indiana Railway Museum (French Lick, IN)
Primarily Serving: Bloomington, IN - Louisville, KY - Owensboro, KY - Evansville, IN |
| Interdom Partners Ltd (Palos Heights, IL)
Primarily Serving: Oak Lawn, IL - Orland Park, IL - Tinley Park, IL - Cicero, IL |
