Layer Estimates:

Layer: IllinoisHighways (ID:0)
Count: 13009
Extent:

XMin: -10187448.7319029
YMin: 4444391.40576158
XMax: -9742626.06097505
YMax: 5237396.07582259
Spatial Reference: 102100 (3857)

Layer: Illinois_Counties (ID:1)
Count: 102
Extent:

XMin: -10187546.1366826
YMin: 4437270.14538223
XMax: -9741335.92376271
YMax: 5237587.68889514
Spatial Reference: 102100 (3857)