Infinitely long part on Imported Bridge

I’m in the process of creating a fan-recreation of Ukrainian company GSC Game World’s video game series S.T.A.L.K.E.R. In the process of importing a bridge, two sides on either side of the bridge become infinitely long when imported into studio (highlighted in orange in the picture below.) Otherwise, in blender the mesh appears fine.

In studio, this is the end result:

It also appears that one or two additional parts on either side may have the same issue, but because the meshes are one-sided it’s hard to tell.
Can anyone help me figure out how to solve this issue? I’m attaching the .fbx below.

military bridge.fbx (187.0 KB)

have you tried reuploading the mesh in separate files?