Layer Estimates:

Layer: MassDOTRoadInventoryData (ID:0)
Count: 614359
Extent:

XMin: 34175.9131999984
YMin: 777674.625100002
XMax: 330613.526600003
YMax: 959742.959899999
Spatial Reference: 26986 (26986)

Layer: SummaryMileagebyCityStreet (ID:1)
Count: 106382