I don't know how CR identified specific turnouts, but passing sidings and junctions were identified with a "CP" prefix for Control Point with the milepost, such as CP-123. I'm not sure if you have a model railroad, but Mount Vernon Shops makes decals for these in HO and N at https://www.mountvernonshops.com/products/ho-conrail-cp-control-point-sign-decals-1
Thanks for the response. So if I got this right, mile post 1 would be the control point and going up with the milepost and if it were at 1.5 it would be CP-1.5? Is there away to Identify the diverging direction?
Yes, that's the CP methodology that CR used. A single CP might refer to one or dozens of turnouts depending on the complexity of the location; turnout positions aren't denoted by the CP designation itself. I don't know how CR identified specific turnouts throughout its system.