Most of the Backcountry Horseman's chapters around here adopt trails for maintenance too. The good benefit of that is you can ride year 'round on trail maintenance, even when they are closed for winter. Just have to bring some tools with you and be prepared to cut. ;~D
And hot dogs, or a big pot of chili, to entice more workers..lol
The work parties can be a lot of fun, along with the work. Too bad, it's always the same bunch who do all the work.
I noticed in one of your pictures, that in the background, there seemed to be a lot of homes. Do you have any problems with complaints about flies or manure? What do you do with your manure? This may seem funny to some, but it can be a problem in some areas.