OK, you're a little less confused than I thought at first, but still not 100% right either
What you are thinking of was an NYC line, not B&O. It was the original entrance to Kodak, and to the end of its existence was known as the "Old Way" (for some reason, it was always pronounced with the emphasis on the second word - "the old WAY")
This was accessed by a trailing point switch northbound off the Charlotte Branch, just south of the Kodak RR overpass. The line wound around through the side streets, crossed Dewey Ave just south of Steko Ave, crossed Palm Street, and entered Kodak by crossing Ridge Road as you say, by Bldg 28.
I'm not sure what date the present entrance to Kodak was created, but the Old Way remained in service until I believe the mid 1970s, just not as an entrance to Kodak. The line had numerous other customers and would have made a good modeling project, as it involved interesting switching moves.
At one time there was a receiver of stone for cemetery monuments, Kittleburger Furniture, Clark Steko Pastes, Crescent Puritan Laundry, Ring Fuel (coal dealer), Keystone Builders Supply, and I believe a couple others - all within slightly less than a mile.
When I went to school in the area in the early 60's, the tracks were still in from Palm Street to Kodak, but no longer were used. Somewhere about 1960 the curve was paved over, it became Pillaroscia's Parking, but the rails were still in. But the farthest they were used was to Keystone Builders at Palm Street. My regular route to school was walking down the tracks from Dewey Ave to Palm Street, inspecting whatever cars were there and sometimes climbing up and walking the roofwalks if there were no workers around unloading them.
There were 2 passing tracks across Ridge Road at the newer entrance (right next to the B&O). The west one was the passing track, the east one was known as the Old Way - in other words the track thus known started north of Ridge Road, went south along Kodak, then turned east and became the branch I've described.
So - you are mistaken about B&O going back there, but NYC very certainly did.