Layer Estimates:

Layer: Rails (ID:0)
Count: 32
Extent:

XMin: -8388617.48570796
YMin: 5065630.70172776
XMax: -8287145.05791718
YMax: 5161113.47191219
Spatial Reference: 102100 (3857)

Layer: Roads (ID:1)
Count: 6757
Extent:

XMin: -8387341.35478048
YMin: 5061124.63106007
XMax: -8298347.0167076
YMax: 5171641.23864337
Spatial Reference: 102100 (3857)