This line was constructed by the Atchison, Topeka & Santa Fe southward from the San Felipe Pueblo, NM, to serve the settlement of Hagan (where the track terminated); it also passed by Coyote, NM. This spur hauled coal from the Hagan Mines northward to the main line which still goes through the San Felipe Pueblo along the Rio Grande.
Portions of the abandoned grade to Hagan are still visible (although completely eroded away in many spots). Follow the "Indian Service Road 844" south of the San Felipe Casino which eventually turns into La Madera Road; it is best to do so when it's dry since many arroyos cross the road and can cause problems, especially for low-clearance vehicles. The ruins of the old Hagen Mine and load out buildings are still visible but all the property is posted "no trespassing" but you can still see the remaining railroad grade and structures from the main road.
Hagan to Moriarty: To connect the line at Hagan to the AT&SF to the south at Moriarty, NM, grading and some rail was constructed northwest from Moriarty. The connection was never completed to Hagan, though, and only grading was done for the northern portion. Some portions of this grade are visible along State Road 14 north of Cedar Crest and in San Pedro Creek Canyon. Remnants of both the rail grade and an old stagecoach route can also be seen from Frost Road (County Road 16).
It was also planned to extend a branch of that line westward through the Tijeras Canyon (where old US Route 66 and now I-40 go) and connect to the main AT&SF line in Albuquerque but only partial grading was done and the idea was shelved; little or no evidence of that grading is apparent today.
Thanks to Dr. James H. Olsen, Jr., PE for contributing information about this route.