I hope every sign put up is not there the next day.
It could happen,,,,
its happened down the road form here many many times over the years...
“If you’re driving down Highway One north of San Francisco don’t look for the road sign to Bolinas, CA, because this quirky coastal hamlet is the only California municipality without a sign to lead you from the highway to the city limits. There used to be a sign that said “Bolinas, 2 miles”— many of them in fact, but each of the signs put up in the last 20 years has enigmatically disappeared—the longest-standing sign lasting only 36 hours.”
http://intravelmag.com/intravel/in-depth/bolinas-california