I was looking at US 66 Historic in Illinois, and the I-55BL labels (at least in Lincoln) are just regular street names. I would think we would be going with I-55BL_LinS, I-55BL_LinN, I-55BL_BloS, etc.
Also for US 66 His, I think CR121 should be OldIL121.
Historic US 66 in Springfield IL does not follow the I-55 business loop between Spruce St and Lawrence Ave. The routing between 6th/7th and 9th uses Spruce both directions.
6th & Spruce
9th & Spruce
I just noticed this myself.
US66HisCar: 1. CurRd>_CurRd_N
2. RecDr>-KniRecDr