Mri- c5-6 there is apparent central bony bar abutting the ventral cervical cord. what does this mean?

May mean nothing : The bar is a bone spur. Caused by disc degeneration at that level. It is a common finding and may not mean anything clinically. The important question is whether or not there is actual spinal cord compression. Per your question, it sounds as if the spinal canal is narrowed a bit (stenosis), but there is not any spinal cord compression. Frequently, pt and traction can be of benefit.