There must be hundreds, if not thousands, of signs added every year. Not only are some moved, at times, but they have to clean out the sign Forrest from time to time. There are very few "old" signs there. I have never found one of mine over ten years of age and I have probably hung six or eight, over the years since 1962.
The more attractive you make your sign, the more chance it has of lasting, I would guess.
joe b.
Stuart Florida
Formerly of Colorado and Alaska
2016 Fleetwood Flair 31 B Class A w/bunks
www.picturetrail.com/jbpacooper
Alaska-Colorado and other Trips posted
"Without challenge, adventure is impossible".