There are several more signed segments of the Old Spanish Trail in New Mexico. One follows Ranchito Road (NM 240) west from
downtown Taos to
Los Cordovas Road. Another follows Paseo del Pueblo (NM 68 and US 64) from
NM 518 to
Veterans Hwy/BIA 701. (Based on the mileage stated on the sign at NM 518, this segment should in theory continue another mile north along Veterans Hwy, but I don't see any Old Spanish Trail signs anywhere on Veterans Hwy on GMSV.) A third follows NM 522 from
US 64 to
NM 196. I found another sign
on NM 68 SB at the beginning of the switchbacks approaching Pilar. (I haven't found the corresponding southern sign. The mileage on the sign doesn't make sense, as, on
the NPS map of the Old Spanish Trail, the trail abruptly turns away from NM 68 only four miles from this sign.) The "Northern Route" is signed on US 84 from
Railroad Avenue in Española to
this point south of Cebolla. I also checked Street View in a bunch of other places in New Mexico where modern roads more-or-less follow the trail on the NPS map, but I didn't see any more Old Spanish Trail signs.