For all curious, here are some ideas for preserved steamers by road ITTL. Starting with a personal favorite, the PRR/N&W.
Also, note that ITTL, the K4/L1/I1/M1 types never have their headlights flipped to the top as opposed to front. Also, the nubmering system uses the class of engine when referring to engines to avoid numbering conflicts.
Pennsylvania
I1 Class 2-10-0
- #1753: Operational at the Juniata Society; Altoona, PA [1]
- #4483: On display at the Railroad Museum of Pennsylvania; Strasburg, PA
K4 Class 4-6-2
- #1120: On Display at the Indiana Transportation Museum; Logansport, IN [2]
- #1361: Operational at the Juniata Society; Altoona, PA [3]
- #3750: On display at the Railroad Museum of Pennsylvania; Strasburg, PA
- #3768: Operational at the Juniata Society; Altoona, PA [4]
- #5357: On display at the Museum of Transport; St. Louis, MO
- #5399: Operational at the Lima Locomotive Museum; Lima, OH [3]
- #5495: On display at the America Rails Museum; Jersey City, NJ
M1 Class 4-8-2
- #6717: On display at the Railway Museum of Greater Cincinnati; Covington, KY [1]
- #6726: On display at the Henry Ford Museum; Dearborn, MI
- #6755: On display at the Railroad Museum of Pennsylvania; Strasburg, PA
- #6872: Operational at the Juniata Society; Altoona, PA
R2 Class 4-8-4
- #7006: On display at Bendix Woods County Park; New Carlisle, IN
R3 Class 4-8-4
- #7100: On display at the America Rails Museum; Jersey City, NJ
- #7106: On display at the Railroad Museum of Pennsylvania; Strasburg, PA
- #7185: Under restoration at the Railway Museum of Greater Cincinnati; Covington, KY [5]
- #7205: Operational at the Juniata Society; Altoona, PA [5]
- #7216: Operational at the Juniata Society; Altoona, PA
- #7337: On Display at the Indiana Transportation Museum; Logansport, IN
S1 Class 6-4-4-6
- #6100: On display at the Museum of Science and Industry; Chicago, IL
T1 Class 4-4-4-4
- #5520: Operational at the Juniata Society; Altoona, PA
- #5546: On display at the Smithsonian; Washington DC [5]
Norfolk and Western
A Class 2-6-6-4
- #1212: On display at the Virginia Museum of Transportation; Roanoke, VA
- #1218: Operational out of the Shendonah Valley Roundhouse; Roanoke, VA
- #1242: On Static Display outside COSI Columbus; Columbus, OH
J Class 4-8-4
- #604: On display at the Virginia Museum of Transportation; Roanoke, VA
- #611: Operational out of the Shendonah Valley Roundhouse; Roanoke, VA
M Class 4-8-0
- #475: Operational at the Huckleberry Scenic Railroad; Christiansburg, VA
- #382: Operational at the Virginia Creeper Scenic Railroad; Abingdon, VA
- #396: Operational at the Virginia Creeper Scenic Railroad; Abingdon, VA
- #429: Operational at the Virginia Creeper Scenic Railroad; Abingdon, VA
- #433: On display at the Christiansburg Depot; Christiansburg, VA
- #475: Operational at the Virginia Museum of Transportation; Roanoke, VA
Y6a Class 2-8-8-2
- #2147: On display at the Virginia Museum of Transportation; Roanoke, VA
- #2156: On display at Railway Museum of Greater Cincinnati; Covington, KY
Y6b Class 2-8-8-2
- #2174: On display at the America Rails Museum; Jersey City, NJ
- #2190: On display in Bluefield, WV
[1] Uses the 16-wheel Coast-Coast tender traditionally associated with larger engines like the R3s and J1s.
[2] ITTL, it's based in Logansport and runs an interurban line to Indianapolis via Kokomo and Noblesville.
[3] One of numerous K4s fitted with larger 12 wheel tenders in the late 1930s.
[4] Had replicas of its famous streamlined casing and 12-wheel tender built in 1996.
[5] TTL's analogue to Southern Ps-4 #1401, which was placed in the Southern Steam Program instead.
[6] Streamlined in a similar matter to K4 1120.
[7] One of the several engines built by the Roanoke Shops for use by the Pennsylvania Railroad, N&W's parent company.
I will update this periodically.