Blender Track Import Help

Hello all,
New to the unity and blender scene and hoping to maybe get some help. I am working on a little race track that I have created in blender. It uses a flattened cube and path to create the track. All looks well in blender. When I import into unity I get some odd artifact-ing on an upward curve (See picture)

Does anyone know what could cause this? I am using a curve modifier on the block to follow the path model in blender and using an array modifier to increase the original objects size. Below is the view in blender.

 

I never had this kind of problem on exporting meshes from Blender to Unity.
On Blender scene, try to apply Scale (select mesh, Ctrl +A, Apply Scale), check if normals are facing the correct direction and apply all modifiers.

Also, if you are exporting a .fbx file, on exporting screen don't forget to Set path Mode to copy, Apply Transform and set the Scale to FBX Units Scale. (check the .png file below)

Have you checked on another clean Unity project if the problem persists?