Lawrenceburg and Bloomington were once big half miles and a shorter track was built using the common front straight on both. Both Half Miles were removed. Bloomingtons turn four hillside at the back of the property shows the outline of the old turn 4. Burg, The one tree next to the building at the back of the pits in turn four end used to have some fencing on it. The old Half mile track served as the exit road until the new 3/8ths was built.

Montpelier's old turn three and four are still out there at the end of the property. Very clearly seen.

The answer is. Im unsure. PA seems to be a exception with mostly bigger tracks. I gotta wonder if it isn't due to Big Block Mods being the dominant class. (At least it was till the 90s)