Layer Estimates:

Layer: Culvert Openings and Screens (ID:0)
Count: 3013
Extent:

XMin: 192601.996147063
YMin: 168338.246632717
XMax: 353690.007073828
YMax: 394373.007886304
Spatial Reference: 27700 (27700)

Layer: Culverts (ID:1)
Count: 2662
Extent:

XMin: 181826.505698948
YMin: 167959.382599589
XMax: 354006.999700242
YMax: 393300.024698931
Spatial Reference: 27700 (27700)