okay so you're saying I-40 business/east highway 66 should be converted to dual carriageway (splitting has other connotations, hence it was confusing) - not a major issue but could be done.  Yes the TRs I added reflect the blockages that the median creates.
I do see three unaffiliated nodes with no tags https://www.openstreetmap.org/node/11150077666 https://www.openstreetmap.org/node/11150077629 https://www.openstreetmap.org/node/11150077656 and those could just be deleted.