Call your local shops for quotes on them. They can make it. I prefer insulated doors. The one I got for the shop is actually 2 inches thick. I think that most are 1 3/8 or so.
You are close to me and I might be able to help you out. PM me the info about the door. Is it 7' wide by 8' tall? What type of door are you looking for? We make doors in any inch increment width wise and most 3" increments height wise.
Yes, garage doors can be made in any size especially done in wood. Custom wood garage doors have specially designed tracks and motors to carry the extra weight. We have done gfarage doors 21' wide and up to 10' ft tall so anything is possible.