Layer Estimates:

Layer: states_mileposts (ID:0)
Count: 18169
Extent:

XMin: -114.741537
YMin: 33.875028
XMax: -106.359425
YMax: 41.999439
Spatial Reference: 4326 (4326)

Layer: states_mileposts_PointsToLine (ID:1)
Count: 377
Extent:

XMin: -114.741537
YMin: 33.8941800000001
XMax: -106.359425
YMax: 41.999439
Spatial Reference: 4326 (4326)