to where/so much that, to the point that: Common Errors in English Usage Entry for Monday, May 6, 2013

to where/so much that, to the point that
Complains Fred, “Mac kept borrowing my tools to where I couldn’t finish fixing the front porch.” This sort of use of “to where” to mean “so much that” or “to the point that” is not standard English. The meaning is more about when than where.