Creating 3D Bridges from LiDAR

04-01-2021 01:54 PM
New Contributor III

I am trying to create some 3D bridges based on a classified las dataset (that has a class code of 17 for Bridge Decks) using the Create Bride Surfaces from LAS Dataset tool.  What is confusing me is that the Class Code parameter is requiring a Class Code of 1, 2, 6, 7, 9, 11, or 12.  It doesn't let me select or input a class code of 17, even though that is the correct code for Bridge Decks.  As a result, I can't run the tool.

I'm guessing there is some simple explanation for what I am doing incorrectly.  Any ideas would be appreciated!


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New Contributor

I am not sure why this happens, but I was experiencing the same problem with my LAS files. The workaround is to create a subset LAS file by adding the point cloud to a map, filter the points so that only class code 17 are showing, and then run the Extract LAS (3D Analyst) Tool with the filter on. The resulting subset should work with your Create Bridge Surface Tool.

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