Layer Estimates:

Layer: MileMarkers_Interstate (ID:0)
Count: 3452
Extent:

XMin: 789547.807480007
YMin: 198418.18669109
XMax: 2417493.72382575
YMax: 1025825.36783142
Spatial Reference: 102719 (2264)

Layer: MileMarkers_US (ID:1)
Count: 1547
Extent:

XMin: 412515.948356256
YMin: 67184.5452875048
XMax: 3006036.78787901
YMax: 1027599.90824559
Spatial Reference: 102719 (2264)

Layer: MileMarkers_NC (ID:2)
Count: 367
Extent:

XMin: 499977.634324923
YMin: 255933.483077586
XMax: 3050396.18734901
YMax: 869887.468093678
Spatial Reference: 102719 (2264)